BIOLOGY

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Which of the following biomes does not maintain an average temperature between 20 and 30°C

(Picture/chart table) Temperate deciduous forest

in a well designed experiment, ___ independent variables change

1

How much energy is passed on from one trophic level to the next in a food chain?

10%

A patient should pursue additional diagnostic test if cold symptoms last longer then which time period?

10-14 days

lead (Pb-208) is the heaviest stable isotope known. it had an atomic number of 82. how many neutrons does Pb-208 have?

126

how many protons, electrons, and neutrons are in an isotope of magnesium-25 that has an atomic number of 12?

12protons 12 electrons 13 neutrons

how many neurtons are in the following isotope?

15

Based on the graph below, what is the total number of cases of both MRSA and MSSA in the year 2005?

1800 cases

During which time. Did we experience the greatest increase in the number of cases of all infections?

2001 -2002

after 2 half lives have passes, how much of the original c-14 sample is still present?

25%

annette was given a dose of radioactive iodine for a test on her thryoid. the half life of the iodine is 8 days. how much of the original iodine will be left in her body after 16 days. (that would be 2 half lives)

25%

The effect of temperature on the rate of action of an enzyme is represented in the graph that is showing. The optimum temperature for the action of this enzyme is:

27°C

Which equation below is the correct balanced equation for this reaction? Fe+Cl>FeCl3

2Fe+ 3Cl2 > 2Fe Cl 3

In this reaction: 2N2+3H2 > 2NH What are the reactants?

2N2+3H2

How many valance electrons does carbon have?

4

what is the maximum number of covalent bonds that can form between a single carbon atom and 1 or more hydrogen atoms

4

Humans have________ chromosomes in most cells.

46

Destroying the rain forest leads to a great loss of biodiversity since it is home to __________of all of the species on earth

50%

Use the chart showing here and your knowledge of enzymes to answer this question. At what temperature would enzymes C most likely be denatured?

63

basic, or alkaline, solutions have pH values above ___

7

the neutral point on the pH scale is __

7

normal human blood has a pH of ___

7.4

If an energy pyramid shows the producers provide 8000 cal, how many calories will be provided by the secondary consumers?

80 kcal

Which of the following is an example of an independent variable?

???

What needs to be done after you test your hypothesis?

????

Which molecule represents an enzyme functioning in this solution?

A (hint: big orange puzzle piece)

Dissecting microscope

A ____________doesn't have high power magnification but it provides a wide area of magnification so as to look at larger portions of the object.

What is the difference between prokaryotes and eukaryotes?

A eukaryote has a nucleus

Sucrose, table sugar, is formed from the bonding of which combination of monosaccharides?

A glucose molecule and a fructose molecule

Populations include which of the following

A group of individuals of the same species

Which of the following examples would demonstrate a population at carrying capacity

A herd of cattle in an healthy pasture

True

A lab technician could use trace evidence of fibers to determine a link between the rug in the dumpster and the victim. Forensics

Secondary succession begins with

A layer of soil

How is a lytic infection different from a lysogenic infection?

A lytic infection uses the cell to reproduce viral DNA to form new viruses that burst from the cell

Mass

A measurement reads 104.6 KG. This is a _______________measurement

Which of the following is not part of a protein?

A phosphate group

What is a hypothesis?

A question about nature and how it works

Which of the following is an accurate description of how a vaccine works to prevent viral infections?

A small dose of the virus is injected so that the body learns to recognize the antigens

23 CM

A student is attempting to measure the length of his hand span. He measures the distance and it is 2.3 DM? How many CM would that be?

How does bacteria cause illness or disease?

A. Bacteria feed on healthy tissue B. Bacteria releases toxins into the tissue E. A and B only

Viruses are made up of which of the following components?

A. Capsid C. DNA or RNA E. A and C only

How does the body benefit from the normal flora of bacterial cells? Choose all that apply

A. Compete with the invading pathogens for nutrients in space C. Releases toxins it kill invading bacteria D. Releases vitamins into the body that humans are not able to produce

Which of the following has contributed to the increase of antibiotic resistant bacteria? Choose all that apply

A. Overuse of antibiotics for illness not caused by bacteria B. Not following directions when taking prescription anabiotic's D the increased use of antibiotics on my stock in poultry to reduce the risk of infection

The immune response of the body can cause which of the following symptoms?

A. Swelling B. Pain C. Inflammation D. All of the above

Why are viruses unpredictable and difficult to treat?

A. The genetic material can alter B. The variations in proteins on the outside of the virus C. Both A and B

Which of the following problems could be solved following the steps of the scientific method?

A. Trying to figure out who to take to prom B. Determining the best route to take to work C. Choosing which brand of detergent works best D. All of the above

Why is it difficult to develop vaccines and use them to prevent viral infections?

A. Viruses can change over time and are no longer recognized B. The protein coats are very specific to each type of virus C. More infections forms can emerge D. All of the above

Antibiotic's have been used in agriculture for many years. What purpose is in antibiotic use in livestockstock?

A. to control and prevent disease C. Increased weight gain D. Both A and C

In the series of metabolic reactions, reactant R is converted into product A, and enzyme X then catalyzes the conversion of product D in the products B and D, product B is converted to product C. Assume the product C inhibits enzyme X and that product C is not consumed into a subsequent reaction. The rate of production of which product is least likely to decrease?

A.) A

Centrifuge

A/n __________is used to separate mixtures by spinning the sample and letting heavier particles be pulled to the bottom of the container.

Which of the following is a high energy molecule that delivers energy to cells?

ATP

If a reaction has a positive heat of reaction, it __________ heat as it proceed

Absorbed

Aquatic species that are capable of making their own light can be found in the __________zone

Abyssal zone

electricity

According to the EPA, where do most greenhouse gases come from in the United States

____________energy is the energy needed to start a chemical reaction

Activation

Whe should the doctor prescribe anabiotic's for an illness?

After the doctor he's taking a culture and tested positive for the presence of a bacteria

True

All DNA and microbes should be handled as if they cause infections.

Estuaries provide which of the following

All of the above

How can a graph be useful when answering questions on the test?

All of the above

What type of evidence can be collected from the gloves to determine and link to the victim or suspect? Forensics

All of the above

How do cancer cells cause problems with healthy cells?

All of the above Cancer cells take nutrients, oxygen, and blood supply away from the healthy cells. Tumor formation causes damage to surrounding tissues Cancer treatments damage healthy cells as it damages the cancer cells

Which of the following activities contribute to the levels of carbon dioxide in the atmosphere?

All of the above Driving a car Turning on the lights Keeping your computer on at all times

Which of the following are considered to be eukaryotes?

All of the above Fungus, plants, animals

How have humans managed to increase the carrying capacity on earth?

All of the above More efficient method for food production Design techniques for cleaning water Improved transportation to make us all more connected

What happens during early succession that allows growth to proceed to the next stage?

All of the above New types of seed enter the environment The early grasses will compete with field grasses for resources As early grasses die, they decompose to add to the soil layer

Following the cleanup efforts after an oil spill, you still may have problems associated with which of the following?

All of the above Residual oil, toxins entering the food chain, unknown lasting problems associated with untested products

Which of the following prevents succession from taking place

All of the above Cutting grass, repaving the street, burning the field

Which of the following is an example of a density independent limiting factor?

All of the above Natural disasters, weather, human disturbances

Which of the following is an example of how you can conserve resources?

All of the above reduce recycle reuse

As animals and plants die, they are broken down by decomposers and nitrogen is released as ammonia, this process is called

Ammonifcation

When sodium and chlorine combine, sodium gives up one electron to fill up chlorines outer level. The result is:

An ionic bond with sodium becoming a positive ion and chlorine becoming a negative ion

__________enzymes take smaller molecules and make larger ones

Anabolic

Sister chromatids separate and begin to move apart during________.

Anaphase

False

Answers that use qualifiers are always correct.

How do antibiotics kill bacteria?

Antibiotics prevent bacteria from building cell walls

Archimedes was asked by King hero to find out if he's ground was really made of gold. He knew the gold would be happier if it was an alloy and not pure gold. He got into his back and realized that when he got in, the water level rose. He knew then how to tell if the crown was pure gold. He figured out if it equal weight of pure gold raised the water level the same as the crown did, it would be pure gold he proved it was not gold. It is said that he ran through the street naked because he was so excited about his discovery. Is this basic science driving applied science or applied science driving basic science?

Applied science driving basic science

Coenzymes attached to the active site of the enzyme and ____________considered a substrate

Are not

Ming is having trouble sleeping and decides to participate in a study to determine whether a certain medication helps people sleep. There are 30 volunteers, each of whom is assigned to one of two groups. Volunteers in group one are given the medication, and volunteers in group 2 are given a placebo. Which step is important in order to ensure scientifically valid results?

Assign the subjects to groups at random

Luminal

At a crime scene, what tests could the lab technician use to find traces of blood in the area? Forensics

Which system in the biosphere includes the components that make up the air surrounding the earth?

Atmosphere

Here are some of the stages of an enzyme controlled reaction. An enzyme substrate complex is represented by the diagram:

B (A green and yellow complete circle)

Which of the following examples would demonstrate exponential growth

Bacteria growing in a nutrient broth

74-90.5 MPH

Based only on the information in the tables, for the majority of the hurricanes that will strike the coast near Texas and Mexico, what is the most likely wind speed range, in miles per an hour?

The main difference between basic science in applied science is_________

Basic science increases understanding and knowledge and applied science create solutions

Leonardo da Vinci was fascinated by the animal anatomy. He was especially taken with the birds and how their anatomy enabled them to fly. He said he birds Andrew many pictures of the anatomy of the wing birds. This led him to try to devise a human powered mechanical flight device. He made sketches a very designs and also varies machines it would help me and fly. Leonardo da Vinci used____________

Basic science to drive applied science

Which activity is not involved in keeping balance within the body?

Bathing and washing your clothes every day

Which of the following is NOT a material that can be placed in the recycle bin at home or school?

Batteries

Fireflies vary in the flashing patterns they use to attract mates. This is an example of which type of isolation?

Behavioral isolation

________ is a tumor that remains in its original location

Benign

6.0 and 6.5

Biologist studying the effects of pH level on temple development gather data and recorded it in this graph. In the graph, between which two consecutive pH levels is there the greatest difference in the number of tadpoles?

C. Stonefly 0 crayfish 12 blackfly 8 leach 3

Biology students gather samples from a local streaming conclude that it is extremely polluted. Which table most likely reflects the data gathered by the students?

A ___________is a large geographic area that has the same major forms of life in a particular climate-such as deserts forest in prairies

Biome

______Is a large geographic area that has the same major forms of life and has a particular climate-such as a desert forest or prairie

Biome

__________Is it example of a prokaryotic cell

Blue-green algae

All of the following biomes receive less than 150 cm average precipitation per year except________

Boreal forest

Structurally, viruses and bacteria are similar in that_______

Both contain genetic material

structurally, viruses and bacteria are similar in that_________

Both contain genetic material

Susie has decided that she wants to see how different salt concentrations affect the cytoplasm of the cell. She does research and plant cells and plant cell components....................... How did Suzy make the 10% salt solution?

By adding 10 g of salt to 100 mL of water

Suzy has decided that she wants to see how different salt concentrations affect the cytoplasm of the cell. She does research on plant cells and plant cell components. Suzy decides to use an onion as a source of plant cells because they staying well. A thin layer of the onion is peeled off and placed on a slide. She add one drop of distilled water and one drop of iodine stain and views the cells under a microscope then she drew and identified observe structures. Next she prepared a 5% salt solution - she also prepared a 10% salt solution. She added a few drops of the 5% salt solution to one side of the slide and she look at the slide again under the microscope. She also drew and identify the structures. She repeated the steps with the 10% salt solution. How did Susie make the 10% salt solution?

By adding 10 g of salt to 100 mL of water

How do enzymes speed up chemical reactions?

By reducing activation energy

Which energy pyramid accurately represents the amount of energy in a desert food chain including cactus, hawk, insects, and snake

C. Hawk Snake Insect Cactus

Which molecule is not associated with the reaction occurring in a solution?

C. (Green) (Picture with puzzle pieces and green puzzle pieces don't fit to anything)

Which of the following compounds is an organic compound?

C2H6

In aerobic respiration, glucose combines with oxygen to your carbon dioxide and water. What is the balance chemical equation for this reaction?

C6h12o6 +6O2+6H2O

Which of the following functional groups is carboxyl?

COOH

Plants get carbon from what chemical in the air

Carbon dioxide

Which of the following makes up the largest percentage of the greenhouse gases in the atmosphere?

Carbon dioxide

What are the reactants in the photosynthesis equation?

Carbon dioxide and water

Match the functional group with the correct name:

Carboxyl COOH Hydroxyl OH Amine NH3

Animals that eat other animals are called____

Carnivores

The part of the cell that functions to maintain homeostasis relative to the cells environment is the__________.

Cell membrane

_________ during cytokinesis in plant cells.

Cell plate forms

All of the following EXCEPT ____________ are part of the cell theory

Cells were proceeded by viruses

True

Celsius degree and a kelvin degree have the same magnitude. Remember that to change from Celsius to Kelvin take C +273 equals K

Milligram

Chan wants to determine how much the mass of fungus growing on a nutrient Agar plate changes over an eight hour period. What is the most appropriate unit of measurement for him to use?

Which of the following viruses can remain dormant in nerve cells in reemerge as shingles later in life?

Chickenpox

The __________through a series of chemical reactions captures solar energy (sunlight) and converts it to sugars and carbohydrates (chemical energy) in which it is stored until needed.

Chloroplast

When a cell is not dividing, DNA is a threadlike form called__________.

Chromatin

During cell division, DNA is in a condensed form called__________.

Chromosomes (Chromatin is an option also - but chromatin is DNA IN A THREADLIKE FORM)

The average, long term weather patterns of a region describes the_____

Climate

Herds of animals demonstrate _______dispersion

Clumped

Which non-renewable resource comes from plants that lived millions of years ago

Coal

The is all the organisms ( like plants and animals) that live together in certain defined area.

Community

Which of the following will provide the most accurate results for an experiment?

Compare a large sample size from multiple trials

A__________protein source is one that provide all of the essential amino acids needed for the body to make the proteins it needs

Complete

Which of the following characteristics are found in a virus?

Contains DNA

The part of an experiment that is established to determine what happens under normal conditions.

Control

In an experiment, one group that is tested does not experience any change in variables that are being studied. What is that group called?

Control group

True

Correct spelling and punctuation are important component in technical writing piece

Which of the following is an example of a dependent variable?

Counting the number of seeds sprout in 10 different containers that receive different types of fertilizer

Cosmetics often contain gyycerol, which has three identical functional groups. Which type of bond hold these functional groups together?

Covalent

Which of the following methods can be used to test A hypothesis?

D all of the above A. Perform an experiment in a lab B.Perform the old research on behaviors and nature C. Collect data and repeat experiments

Which of the following can cause an enzyme to be denatured?

D. All of the above

What are the possible causes for the increase in it antibiotic resistance?

D. All of the above A. Too many antibiotic prescriptions for human illness B. Overuse of antibiotics in livestock C. Improper use of anabiotic's

All living things contain a blueprint for their traits in the form of________

DNA

All living things contain a blueprint for their traits in the form of_________

DNA

True

Data tables and graphs can summarize important information that is included in the reading passage.

Bacteria can also return nitrogen to the atmosphere as nitrous oxide or nitric oxide it in a reaction called

Denitrification

The part of the experiment that is measured to determine the effects of the experiment

Dependant variable

_____Is the study of the relationship between organisms and their environment

Ecology

The interactions between a community of living things and it's physical environment make up an

Ecosystem

What are all of the resources in organisms in one environment collectively called?

Ecosystem

What level of organization best describes a group of living organisms and their abiotic environment

Ecosystem

Which of the following is an example of a quantitative observation?

Eight geese flew in a V formation

West decided to grow some peppers in a pot on his deck. He watered the peppers and make sure they received plenty of sun. When the peppers were ripe he was able to pick them. The process that led to the growth of the pepper was___________

Endothermic because the peppers have stored energy that will be used when they are consumed

When energy is absorbed or any chemical reaction, the reaction is classified as___________

Endothermic chemical reaction

What happens when the bond between phosphate groups of ATP breaks, changing it to ADP?

Energy is released

Which of the following is not a focus area for the task force dealing with anabiotic resistance?

Enforce restrictions for anabiotic you

Hydrogen peroxide is a chemical found in many household medicine cabinets. It is also a byproduct of cellular metabolism and aerobic organisms. The reaction showing here occurs in the cells to prevent the accumulation of hydrogen peroxide. In this reaction, catalase functions as a_________

Enzyme in the breakdown of hydrogen peroxide (Hydrogen peroxide BREAKSDOWNS hair and makes it blond)

A student placed groups of seeds in a variety of temperatures ranging from 0 to 50°C. A difference in the rate of germination in the groups at different temperatures was most likely due to the effect of temperature on_________

Enzymes

This ecosystem contains a mixture of salt and freshwater where river flows into the ocean

Estuary

Organisms that contains cells that have a nucleus are called________

Eukaryotes

Which of the following is not one of the three ways water returns to the ocean

Evaporation

The process of adapting or species change in overtime is called_______

Evolution

The process of substances leaving a cell is__________.

Exocytosis

If a reaction releases energy or heat, it is called a _________ reaction

Exothermic

When stored energy is released or given off during a chemical reaction, the reaction is classified as an__________

Exothermic chemical reaction

The cell membrane, also called the plasma membrane, has several features that enable the cell to carry on life processes. Which of the following best describes the plasma membrane in animals?

FLEXIBLE, allows only selected molecules to cross, DOUBLE layer of phospholipid

The development of new anabiotic's is increasing in order to keep up with the emergence of new strains of resistant bacteria.

Falls

A polypeptide is formed when less than five amino acids joined together with peptide bonds

False

A prokaryotic cell has membrane-bound organelles

False

A theory in a law or the same thing

False

All bacteria is harmful

False

All living things contain the same amount of DNA

False

All prokaryote cells contain a cell membrane, nucleus, and chloroplasts.

False

Anabiotic resistance is limited United States.

False

Biotic are the nonliving parts and abiotic are the living parts of an ecosystem

False

Cellulose is primarily used by plants as an energy source

False

Changing only one amino acid in a polypeptide chain with hundreds of amino acids will not have an adverse effect on the protein

False

During cellular respiration, carbon dioxide CO2 is used by plants to make carbohydrates

False

Fats are usually a plant origin and oils are usually of animal origin.

False

For a healthy diet and humans, eating saturated fat is preferred over eating unsaturated fat's.

False

Human activity rarely prevents succession from taking place

False

In 1977, the FDA ban the use of antibiotic's for production purposes.

False

In older people the cell cycle speeds up as they age.

False

Lipids can be recognized because they are all liquid at room temperature

False

Most bacteria are considered infectious.

False

Nitrogen that can be used directly by plants is called usable nitrogen

False

Nutrition guidelines state that adult should have more than 70% of their daily diet calories from fat.

False

Observation is based only on what we can see

False

Of the antibiotic prescriptions given for upper respiratory illness, 80% are necessary based on the guidelines provided by the CDC.

False

Plant cells and animal cells are all prokaryotes

False

Producers are organisms that breakdown dead organic material and inorganic matter, like bacteria and fungi

False

Prokaryote cells have many specialized structures

False

Structural diagrams show the actual shape of a molecule.

False

The energy for life primarily drives from the moon

False

The immune system only responds to viruses.

False

The mean system only responds to viruses

False

Water like any other molecule will always move or diffuse from the region of lower concentration to a region of higher concentration.

False

CH3 COCOOH (pyruvic acid) + C2H28N7O14P12 > CO2 + CHOH ETHYL Alcohol ........... What process does this equation represent?

Fermentation

What is the least common cold symptoms that people experience?

Fever

What are graphical representation of relationships between animals and plants in an ecosystem collectively called?

Food web

Which of the following best describes a pathogen?

Germ

What is the name of the CDC campaign to educate the public on the importance of proper antibiotic resistance?

Get smart

Starch is a polysaccharide made up of thousands of _____________molecule

Glucose

Starch is a polysaccharide made up of thousands of _____________molecules

Glucose

Which of the following is not a polysaccharide?

Glucose

Fats and oils are made by adding three weak acids to_______

Glycerol

Which of the following is an example of a pioneer species for an area undergoing secondary succession?

Grasses

Which of the following is NOT a source of air pollution?

Ground water

An example of a top predator would be_______

Hawk

Which of the following uses the most energy each year in American homes?

Heating rooms

Which statement about hemoglobin is not true?

Hemoglobin is composed of two proteins

Liver

Hepatic deals with which organ in the body ?

Maintaining a stable internal environment despite changes in the external environment is called___________.

Homeostasis

_________is the maintenance of a stable internal environment

Homeostasis

Which of the following questions would basic research be used to answer?

How do you dragonflies reproduce

Lydia works in a flower shop after school. She notices that the hydrangeas in container one have pink blossoms........... Lydia most likely conducted her investigation to answer what question about hydrangeas?

How does the chemistry of the soil affect the color of hydrangea blossoms?

.45G

How many G are in 45 CG?

24,300 ml

How many ML are in 24.3 L?

.095 m

How many meters are in 9.5 CM?

All of the earths water, including both surface (examples oceans, seas, rivers, rake, and streams ) and subsurface water/Ground water are called______

Hydrosphere

Which set of words will correctly complete the following statement: ________ is a testable statement about the world that can be supported or refuted by new scientific evidence, where as__________ is it established, tested explanation of a phenomenon that is supported by current evidence.

Hypothesis; theory

A_______ is one in which the concentration of dissolved particles in the water outside the cell is lower than the concentration inside the cell.

Hypotonic solution

A theory is different from a hypothesis because:

I theories except it is true because of the accumulation of supporting evidence

A standard unit as a basis for comparison

If a scientist wanted to create a new system of measurement, the first thing needed it would be:

False

If all of the above is an answer choice, you should always choose that as your answer.

Overheating

If hyperactive means overactive, what is someone with hypothermia suffering from?

Which of these species might be classified as a pioneer species

Iichen

Transmission electron

In a _____________microscope, the electron beam is accellerated by an anode, focused by electrostatic an electromagnetic lenses, and transmitted through the specimen that is in part transparent to electrons and in part scatters them out of the beam.

True

In technical writing, a get to the point type of writing style is used

True

In technical writing, the audience is well defined and is interested in the topic without the writer happen to draw them into the writing.

France

In what country did the metric system originate

1800s

In which time did the US make the metric system excepted as a system of measurement passing the metric act?

Which of the following does NOT help conserve the biodiversity of the biosphere?

Increase deforestation efforts (this is a trick question- deforestation is tearing down a forest)

The part of an experiment that the scientist changes in order to test the effects.

Independent variable

Ribonucleic acid's (RNA) primarily act as________

Information carriers

Which of the following is NOT an example of a predator/prey relationship?

Insects and flowers

Which of the following is NOT a part of mitosis?

Interphase

Species must be able to tolerate changes in temperature and water levels in the _______zone

Intertidal zone

What is the primary direction of water movement when a cell is placed in a hypotonic solution?

Into the cell

Which is the least likely trait of an organic molecule?

Ionic bonds are present between the atoms

Gas chromatography

Is a way of separating chemical substances from a next sample by passing the sample, carried by moving stream of gas, through a tube packed with a finely divided solid that may be coated with a liquid film.

When the cell is not dividing, DNA has all of the following characteristics EXCEPT_________.

Is dispursed throughout the entire cell

What is a hypothesis?

It is a statement of what the researcher things will happen in an experiment

False

It is acceptable for students to do bloodwork any modern biology laboratory.

False

It is acceptable to hold a specimen to view it completely rather than pin it to a dissection pan.

False

It is acceptable to place metal objects such as aluminum foil in the microwave

Why is topsoil considered a non-renewable resource?

It is destroyed by erosion and pollution at a faster rate than it can be replaced

True

It is important not to burn plants with Allergan-type oils such as poison ivy and poison oak.

True

It is important to know the difference between edible and non--edible plants.

True

It is important to know the difference between edible and non-edible plants.

True

It is important to provide adequately sized cages for any animal kept in a biology lab

True

It is important to sterilize bacteria cultures and petri dishes prior to disposal

If a species is introduced into an environment where it has no predators, what will happen to the population?

It will show rapid growth

Which of the following would NOT reduce the amount of electricity you use at home?

Keeping the thermostat temperature really low in the summer (this is a trick question keeping the thermostat lower the summer is running the AC high)

Disinfecting the lab table before and after the transfer

Keiko transfers samples of bacteria from a culture tube to several petri dishes. Which technique should she use to minimize contamination of the culture?

The distance between two points

Length is_______

A reaction is _________likely to occur if the activation energy requirement is higher

Less

Biology is the study of_____

Life

All of the following are examples of disaccharides except

Lipids

The ___________model of how an enzyme functions describes how the enzyme fits the substrate like a puzzle piece fits a puzzle

Lock and key

384,400 KM, Mark is correct

Mark and Sheri were arguing about the distance from Earth to the moon. Sheri says it's more than 3 million km. Mark doesn't agree. They look up and find out the distance is 384,400,0000 m. How far is that in kilometers? And who is correct? (In science, and commas are not used to separate three numbers as they are in United States. Some countries use commas as decimal points (France) The spaces in the answers below are we are commas would be in the United States.)

False

Mass and weight are measuring the same thing.

Several students in a biology lab tested mealworms preference for damp or dry conditions. The student plays 50 mill worms one by one in the middle of a layer paper towels with a damp area and a dry area. The meal worms were allowed to move freely over the paper towels for 10 minutes. After 10 minutes the students noted the location of each meal worm. The data is summarized below: Which conclusion best supports the data collected in both experiments?

Meal worms are more strongly influenced by food then by damp or dry conditions.

_________Involves all the chemical reactions involved in maintaining life processes

Metabolism

When the chromosomes are completely aligned, the cell is in__________.

Metaphase

____________is when cancer spreads to other parts

Metastasize

Any living organism that cannot be seen by the naked eye

Microbes are____________

False

Modern microscopes do not use any of the principles that Anton van Leeuwenhoek used in earlier ones.

Which of the following is NOT a result of increased biodiversity in an ecosystem

More diversity decreases stability among living things

Which of the following is NOT a characteristic of all living things?

Movement

Volume

Mrs. Fisher asked her student to record his measurements on the board. This is what he wrote: 14.5 ML, 15.6 ML and 14.8 ML. These are ____________measurements

Which part of our body is glycogen found and used the most?

Muscles

An example of _________is the relationship among protist that live in the intestines of termites

Mutualism

Anabiotic resistance in bacteria resulted from?

Natural selection

Which oceanic zone contains the highest number of photosynthetic plankton and algae

Neritic zone

Why should scientists continue to test and research current theories?

New experimental data helps increase understanding of current theories or it may disapprove them and lead to new theories

______Is the role/job of an organism has in a community

Niche

__________Occurs when two or more species divide resources in order to avoid competition

Niche partitioning

A _____________is the full range of physical and biological conditions in which an organism lives in the way in which the organism uses those conditions

Niche???????

in a water molecule, which atom has the partial negative charge?

O

Which of the following is not an example of applied science?

Observing and recording data regarding tide patterns in the ocean

False

On the ACT test, you should not gas because you were penalized for wrong answers.

Essay question: Antibiotic resistance has been identified as a major health right across the globe. A task force has been created to analyze the problem and come up with possible solutions. As a result of the findings of the task force, several guidelines have been established with recommendations for antibiotic use in human medicine and agriculture. Should the FDA go a step further and restrict the use of antibiotics unless absolutely necessary? In other words, should antibiotics only be used in cases were definite need has been established through diagnostic test that have been identified for the presence of a bacterial population? Explain whether you believe existing guidelines are enough or new restriction should be enforced. Provide two pieces of evidence from the lesson to support your argument. I believe the existing guidelines for the use of anabiotic's is not enough and that new restriction should be enforced

One reason I believe this is because the trend an antibiotic resistant is widespread in general in nature. If the problem was limited to one part of the world or one particular bacteria it would not be alarming. The cases of MSSA and MRSA resistant to antibiotics was 800 in 2001 and it is grown to 1800 in 2005. Another reason is the unnecessary use in agriculture and animals for production purposes. Important in a biotics necessary to treat human illnesses should not be used for production purposes. Why should we be allowing antibiotics to become ineffective for production purposes, when humans need those medicines to be effective and save human lives. Especially when companies are not making new antibiotics very often.

Given what you know about the hierarchy of chemical organization, answer the following question. If Louisville was a molecule, Jefferson county was a cell, and Kentucky was a tissue, what would United States be in relation to the biosphere?

Organ

________are specialized structures in a cell that performs specific functions.

Organelles

What key factor distinguishes organic compounds from inorganic compounds?

Organic compounds contain carbon

________ is the movement of water across a selectively permeable membrane.

Osmosis

Based on the information in the graph from the national Institute of health, which antibotic was the most effective in treating bacteria from 1981 to 1993?

Penicillin

What information is provided on the Y axis in the following graph?

Percent of susceptible isolate

True

Persons with pacemaker should not be near the microwave when operating.

Plants are self feeding

Plants are considered autotrophs. What does that mean?

______is the outer covering of all cells.

Plasma membrane

________Is a group of individuals belonging to one species usually occupying a defined area

Population

In a chemical equation, the substance on the right-hand side of the equation is called___________

Products

Cells that lack a nucleus are called_______

Prokaryotes

Which of the following traits distinguishes prokaryotes from eukaryotes?

Prokaryotes are usually identical and eukaryotes differentiate

During which phase does the nuclear envelope begin to break down?

Prophase

Enzymes are made of _______

Proteins

Jenna's favorite breakfast food papaya contains significant amount of the Enzyme papain- a protease. Which substances does papain help digest?

Proteins (Proteins= papaya)

an example of a primary consumer would be_______

Rabbit

One way people get Cholera and hepatitis is having ________

Raw sewage in the drinking water

If a researcher makes an experimental observation that is contrary to well-established scientific understanding, what should be the next step?

Re-evaluating the procedure and replicating the experiment

In a chemical equation, the substance is on the left-hand side of the equation are called__________

Reactants

A species will occupy a ________niche in order to reduce competition

Realized

The part of an experiment that is analyzed in order to form a conclusion

Results

Which one of the following proteins is not a complete protein?

Rice

____________ was the first to name cells and included drawings of cork cells.

Robert Hooke

Before Gregor Mendel's experiments with pea plants, many scientists believed that offspring inherited a blend of parental traits. Mendels results inherited a blend of parental traits. Mendels results contradicted this theory. What aspect of the nature and philosophy of science does this change in thinking exemplify?

Scientific knowledge changes as new data becomes available

Latin

Scientific names are based on a two-part naming system using _________words

For centuries, scholars excepted the theory of spontaneous generation. This theory stated that some living organisms arose from nonliving matter, such as the appearance of maggots on dead meat. In 1669, Francisco ready set out to prove that the maggots actually came from the flies rather than from the Duquesne meet. So I just followed up readies experiment with test to support spontaneous generation or to support ready theory that life comes from living organisms. In 1864, Louis Pastuer performed an experiment that proved that spontaneous generation is not a valid theory. Based on this example which of the following statements most accurately describes scientific theories?

Scientific theories are subject to change with new experimental data

Which of the following describes a controlled experiment?

Set up 10 plants with the same seeds, sunlight and water and very the type of fertilizer ***** this one is tricky memorize it exactly

What is the main difference between sexual and asexual reproduction?

Sexual reproduction involves two parents and asexual reproduction involves one.

Which of the following is an example of homeostasis?

Shivering to generate body heat when it is cold outside

False

Since technical writing is instructional and informative, there won't be any chance for plagiarism.

Enzymes have ________which means they will only work with one specific substrate

Specificity

What is the first step of the scientific method?

State the problem

The physical factors in an environment that trigger a response are called______

Stimuli

Proteins begin being digested in the__________

Stomach

The number and type of macroinvertebrates are a good indicator of the amount of pollution In a stream because they tolerate varying levels of pollution. A biology textbook provides this table of tolerance levels. Biology students gather samples from a local stream and conclude that it is extremely polluted. Which table most likely reflects the data gathered by the students?

Stonefly 0 crayfish 2 blackfly 5 leach 5

A __________is a molecule that is acted on by an enzyme

Substrate

Which statement most accurately describes the induced fit model of enzyme function?

Substrate binding SLIGHTLY CHANGED the shape of the enzyme

Which of the following is not a monosaccharide?

Sucrose

All of the following are part of a nucleotide except_________

Sulfate group

Which of the following will not protect you from bacterial infections?

Taking anabiotic's on a regular basis

True

Technical writing follows a specific format that must be adhered to by the author which limits what the author may include?

False

Technical writing really has no sense of style that the author has to follow

False

Technical writing will not need references as the information is completely from the authors thoughts and ideas

Which type of isolation occurs when a species breed at different times of the day or year?

Temporal

According to the following graph, which anabiotic was least effective 1999?

Tetracycline

The valance electrons outside carbon arrange themselves in a_________.

Tetrahedron

Applied science involves research___________

That is necessitated by the problems resulting from some current issue

What is required for both sexual and asexual reproduction?

The DNA must duplicate

What is different about each amino acid?

The R group

False

The United States has officially adopted the S I and is vigorously pursuing the change across the country.

Scanning electron microscope

The _________ provides striking three-dimensional images but never shows a complete image at one time. It provides information about the topography and composition of the object.

Magnification

The ________increases the size of the image of an object

Pepsin is a protein digesting enzyme in the human stomach. Antacids cause the pH of the stomach to increase and the protein digestion becomes less efficient. What occurs to reduce the efficiency of protein digestion?

The active site of pepsin enzyme CHANGES SHAPE

A carbon footprint is the measure of which of the following?

The amount of greenhouse gases emitted each year

Which part of the virus is responsible for triggering an immune response in the body?

The antigens

How does flesh eating streptococcus bacteria cause illness?

The bacteria releases toxins that causes healthy tissue to die

Which of the following is an example of a qualitative observation?

The bird has red feathers

Frank wanted you determine what the best conditions were for mold growth. He research mold growth and found drawings and information about molds. He was going to try to predict under which conditions bread mold would grow best-hot invoice, warm and moist, or cold and moist. He decided that woman noise will provide the best conditions for bread mold growth. He added a slightly damp paper towel to three different plastic bags and then he added a slice of bread each one. Next he sealed the bags. One bag was placed in a warm, dark place like a cabinet near Stowe. Another one was placed in the refrigerator and a third one was placed inside an empty margarine container and covered with the lid that had holes punched in it. This container was placed in a hot place such as under a lamp. He viewed the bags daily and after about two weeks he made notes and drew pictures of the bread samples. He decided to make a wet mount-a slide wet with mold. He placed one drop of the mythalane Blue dye onto the middle of the slide and then use the toothpick to scrape the sample of mold onto the next one. Next to use tweezers in and cover the sample with a coverslip making sure there were no bubbles. After observing each kind of mold, he drew pictures and wrote descriptions. How will Frank decide which mold grew best?

The bread mold that had The most spores under the microscope would tell which conditions were best for bread mold growth.

The fact it is based on a decimal system

The brilliance and simplicity of the SI is __________

High-voltage and electrocution

The dangers of electrophoresis involve

Weight

The following units measure ________pound, dram, ton, ounce

Which of the following is the course of treatment when you have a viral infection?

The immune response in the body will attack the virus

Which of the following did NOT contribute to the increased use of non-renewable energy sources?

The increase in the production of greenhouse gases

Natural selection allows________

The individuals that are best suited to the environment to pass on traits

A metal rod made primarily of platinum

The physical standard for in the SI was _____________until recently when it was changed to equal a number of wavelengths of a wave emitted by krypton.

On Easter Island, what most likely caused the human population to crash between 1600 and 1700 AD?

The population exceeded the caring capacity of the island and they ran out of resources

What characteristic identifies an organic compound

The presence of carbon

Flu viruses are often named based on__________

The protein subgroups on the outside

Why do plants get plant viruses in humans get viruses specific to humans?

The proteins spikes attract specific target cells

Suzy has decided that she wants to see how different salt concentrations affect the cytoplasm of the cell. She does research on plant cells and plant cell components. Suzy decides to use an onion as a source of plant cells because they staying well. A thin layer of the onion is peeled off and placed on a slide. She add one drop of distilled water and one drop of iodine stain and views the cells under a microscope then she drew and identified observe structures. Next she prepared a 5% salt solution - she also prepared a 10% salt solution. She added a few drops of the 5% salt solution to one side of the slide and she look at the slide again under the microscope. She also drew and identify the structures. She repeated the steps with the 10% salt solution. Which slide was the control group?

The slide from the first step with just the stain

Triple point of water

The standard for temperature in SI is based on the ________?

What is the main difference between the structures of DNA and RNA?

The sugar that it is composed of

The original source of energy that consumers obtain in a food chain comes from

The sun

Use the chart showing and your knowledge of enzymes to answer this question. If enzyme B is functioning at 46°C and a pH of 2, under what conditions would the rate of the enzyme action probably speed up?

The temperature increased to 52°C in the pH increase to 3

True

The title of a graph can provide information that may help you answer a question.

What causes a plant to wilt when it needs to be watered?

The vacuole within the plant cells empty, causing the cells to shrivel and wilt

Businesslike

The voice of a technical writing piece tends to be more_________

What happens to blood vessels near the skin when the temperature is COLD?

They constrict to increase blood flow to the CORE OF THE BODY

Which of the following is NOT a characteristic of prokaryotes?

They contain organelles

Why are organic molecules so diverse?

They have carbon skeletons that vary greatly in arrangement

How do national parks contribute to maintaining biodiversity?

They preserve the native species of animals and plants in that area

Variables in an experiment are__________

Things that can affect the outcome

Which statement below best describes the enzyme represented by the graphs that are showing.

This enzyme works best at a temperature of ****27°C and a pH of 6

How do autotroughs obtain chemical energy?

Through photosynthesis

What are complementary proteins?

To incomplete proteins that together provide all the essential amino acids

What is the purpose of performing a controlled experiment?

To provide consistent results that can be repeated

Cell fractionation

To study the parts of a cell, __________is used to breakdown cells and separate the different components for analysis

True

Today a person could pay a company to determine their genome (entire gene sequence of their full complement of DNA) and it would be affordable and can be done in 15 minutes

Which of the following is an example of basic science?

Tracking a population of deer in a specific area

78% of air is nitrogen gas

True

A graph representing exponential growth forms a J shaped curve

True

A healthy human body contains more bacterial cells then body cells.

True

A polypeptide is formed when less than five amino acids joined together with a peptide bond

True

A single amino acid is called a monomer

True

Acid rain is formed when sulfur dioxide combines with droplets of water in the rain, caused mainly by coal and fuel oil being burned.

True

After cytokinesis, the daughter cells return to interphase to begin the cell cycle anew.

True

An ice pack is an example of an endothermic reaction

True

Biodiversity results from the changes that take place in the environment

True

Chemical equations can display information concerning the energies involved in a chemical reaction.

True

Chemical equations symbolically represent chemical reactions

True

Disaccharides contain two monosaccharides bonded together.

True

Environmental protection agency-EPA-has identified more than 30,000 places in the US where toxic waste have been dumped

True

Eukaryotic cells can specialize for certain functions, such as absorbing nutrients from food or transmitting nerve impulses.

True

Evaporation is the process that put water into the atmosphere

True

Fats and oils are made by combining three weak acids with one molecule of glycerol or glycerin.

True

Fats help to maintain your skin and hair, cushion the vital organs, provide insulation, and is necessary for the production and absorption of certain vitamins and hormones.

True

Food changes only organisms that contribute to the diet of the top consumer

True

Functional groups can be added to carbon chains and that will form new compounds.

True

Homeostasis is an ongoing process.

True

Human activities can deliberately or inadvertently alter the dynamics in an ecosystem

True

If a cell is in the G2 phase and it is injected with cyclin, it immediately enters mitosis

True

In April 2012, the FDA establish new guidelines for in a barbecues and agriculture that are to be followed voluntarily.

True

Individuals are considered to be the same species if they have the ability to breed and produce fertile offspring

True

Lipids feel greasy, oily or waxy when crushed.

True

Molecules on the surface of cells normally inhibit the growth of other surrounding cells.

True

Nitrification is the process where ammonia ions are changed into nitrates in her then taking up by plants in the form of amino acids

True

Organelles are specialized structures in cells.

True

Organisms both cooperate and compete in ecosystems

True

Precipitation is the primary connection in the water cycle to provide for the delivery of atmospheric water to the earth

True

Reactions absorb energy have products with stored energy as a result

True

Science can change when new evidence is found

True

Starch is primary utilized by humans as a source of energy or calories

True

The G2 phase is a continuation of growth in preparation for cell division.

True

The body must make proteins to replace the ones it has used.

True

The cell that divides is called the parent cell in the new cells produced are called the daughter cells.

True

The greenhouse effect would exist even without the increased levels of greenhouse gases

True

The oxygen cycle is the cycle were photosynthetic organisms take in carbon dioxide and release oxygen gas into the air

True

The oxygen gas is taken in by animals for respiration which in turn releases carbon dioxide back to the atmosphere

True

The type of sugar used to make a nucleotide is critical in determining the future cellular role of that particular nucleotide

True

Toxic wastes are by products from industrial processes and these not only pollute the land but also the air and water.

True

Permafrost is a layer of frozen soil found in which biome

Tundra

Laws are considered to be_________

Universal

Which of the following describes deductive reasoning?

Uses a general rule and applies it to specific observations

Some heavy metals inhibit enzyme activity in the liver

Using Lupe's data, what is the most accurate conclusion regarding heavy metals inhibition of enzyme activity?

_________acts as storage compartments for things the cell needs.

Vacuoles

Why do antibiotics only kill bacteria and not viruses or healthy human cells?

Viruses in human cells do not have a cell wall

All of the following are examples of biotic factors except

Water

What is the plant die when it runs out of water?

Water is needed for photosynthesis

__________protects leaves from insects and moisture lost.

Waxes

Lydia works in a flower shop after school. She notices that the hydrangeas in container one in pink blossoms, while the hydrangeas and continue to have blue blossoms. She make sure that they all receive the same amount of light in water. Her boss told her that the flowers are all grown from the same seed variety. Lydia discovers, after test in the soil, but I'll bet the same type of soil was used, the soiling container one has a pH of 6.0, and the soil in container to has a pH of 5.0. As described in the scenario above which fundamental assumption of science did Lydia put into practice while working at the flower shop?

We learn how the natural world works by observing it and by conducting experiments

Species, color, method of removal, and disease

What can the forensic team learn from any stray hairs that are found on the victim? Choose all that apply. Forensics

They are all cubed length units.

What do the units of solid volume all have in common, SI and US alike?

Material safety data sheet

What does MSDS stand for?

A word that limits or increases the meaning of the word.

What is a qualifier in a test question?

Sterilization with heat and pressure

What is an autoclave used for?

212

What is the boiling point for water in Fahrenheit degrees?

Study

What is the meaning of the suffix-LOGY?

Scientific experimentation can most likely answer which question regarding the bird population?

What is the relationship between beak size in the number of offspring a bird produces

??????CHECK Take some deep breaths when u start to get frustrated O R Get up extra early perform strenuous exercise

What should you do to get physically prepared to take a test?

10% bleach

What solution should you use to decontaminate glassware that was used in a laboratory setting?

Kastle-Meyer test

What test can be performed on the rug to identify a stain as blood? Forensics

B. Wear patterns C.Manufactures design E. Number of grooves F. Arrangement of tires at the crime scene

What will the forensics team analyze using the tire tracks that were left at the scene? Choose all that apply. Forensics

True

When an astronaut travels to the moon his mass decreases by 1/6.

Cut away from your body

When dissecting, it is important to_____________?

Examination of the wound without any visual aid in describing the area in question

When the medical examiner determine the victim did suffer from a gunshot wound, which of the following best describes the macroscopic examination performed? Forensics

Hospital

Where would you go to find a cardiologist

CM

Which SI unit would be best to measure the width of a pencil? (The measurement would be close to a single digit.)

Kilo, hecto, deca, base unit, Deci, Centi, Milli

Which list below gives all the prefixes of the SI in the order from largest to smallest units?

11

Which number is pointing to the course adjustment?

Seven

Which number is pointing to the light source?

Forensics Serology Unit

Which of the following forensic science units would deal with the collected biological evidence that could potentially contain DNA? Forensics

Cancer

Which of the following illnesses are you suffering from if you have a carcinoma?

A feature article praising the capabilities of a new mobile phone

Which of the following is not an example of technical writing

A weapon

Which of the following is not an example of trace evidence?

Acrylic nails are acceptable

Which of the following is not true when working with a Bunsen burner?

B. Technical terms D. Passive voice F. Correct punctuation G. Facts and information

Which of the following may be found in a technical piece of writing? There may be more than one correct answer.

Facts

Which of the following will be found in technical writing?

A lead to draw the reader

Which of the following will not be found in a technical writing piece?

Handling a uniform shirt from a player with a bloody nose

Which of the following would be transferring a blood-borne pathogen indirectly?

A manual D. Lab report E Proposal to do a project

Which of these are considered pieces of technical writing? there maybe more than one answer possible

Turning on the gas of a Bunsen burner to adjust the gas flow, then striking a match to test it

Which technique is NOT a proper procedure for a classroom lab activity?

Meter

Which unit below is a standard unit?

Hectoliter HL

Which unit below is the largest unit?

Milligram Mg

Which unit below is the smallest in magnitude?

Millimeter MM

Which unit below is the smallest?

KM

Which unit below would be the most suited to measure the distance of a road race?

DL

Which unit is appropriate for measuring the size of a travel sample of lotion?

L

Which unit is appropriate for measuring volume of water in a swimming pool?

Obtain excepted into a college

Why are test necessary in education?

You can get an idea of the meaning of an unfamiliar word

Why is it helpful to be familiar with the meanings of Latin and Greek root words, prefixes, and suffixes?

In an experiment, 6000 people with a common cold to drink orange juice daily had symptoms that lasted an average of four days. Another 6000 people with a common cold who did not drink orange juice daily had symptoms that lasted an average of seven days. Scientist repeated the experiment 3 times with the same results. They concluded that orange juice reduce is the link to the common cold. Was this conclusion valid, and why?

Yes, because scientists repeated the experiment

True

You can sometimes find clues to answers from other questions on the test.

False

You do not necessarily have to report small animal bites to your teacher.

Electrophoresis

_________ is a laboratory technique used to separate DNA, RNA, or protein molecules based on their size in electrical charge.

Cell cultures

________are used to test sell responses under control condition to study interactions between cells into select specific cells for further study

Electrophoresis

________is a process for separating DNA and studying the sequencing and more

what is a polar molecule?

a molecule with a positve end and a negative end

which of the following is an accurate description of a testable question?

a question that can be answered using an experiment

which of the following is an accurate description of a testable question?

a question that can be answered using test or experiments

aquatic species that are capable of making their own light can be found in the ___ zone

abyssal zone

___ solutions contain higher concentrations of H ions

acidic

___ taste sour

acids

when water clings to the edge of a glass, it is considered to be exhibiting which charateristic below?

adhesion

which of the following problems could be solved following the steps of the scientific method?

all of the above

when sodium (Na) and chlorine (Cl) combine, Na gives up one electron to fill Cl's outer level. The result is :

an ionic bond with Na becoming a postivie and Cl becoming a negative ion

ming is having trouble sleeping and decides to participate in a study to determine whether a certain medication helps people sleep. there are 30 volunteers each of whom is assigned to 1 of 2 groups. volunteers in group 1 are given the medication and volunteers in group 2 are given a placebo (pill w no meds). which step is important in order to ensure scientifically valid results?

assigning the subjects to group at random

which system in the biosphere includes the componets that make up the air surrounding the earth?

atmosphere

isotopes are ______

atoms of the same element with different numbers of neutrons

Which experimental design provide scientist with the best data for investigating which type of feed yields the greatest game in lean muscle mass in cattle?

b. Test five similar groups of cows with five different feed mixtures and measure their weight gain at the end of a six-week trial ****very similar answers - remember COWS = B

____ taste bitter and feel slippery on your fingers

bases

baking soda, bathroom cleaners, and ammonia are all examples of ___

bases

what does the prefix -inter mean?

between

___ is a large geographic area that has the same major forms of life and has a particular climate--- such as deserts, forests, and prairies

biome

why are ions so valuable to the body?

both a and b

which of the following should be included when making a general question table ?

both the cause and effect of the change that is being tested

which of the following should be included when making a general question testable?

both the cause and effect of the change that is being tested

how are solutions and suspensions differentiated?

by the size of the particals in the solution

plants get carbon from what chemical in the air?

carbon dioxide

carbon has 6 electrons. which of the following is NOT true about this element?

carbons neutrons are negativly charged

the average, long term weather patterns of a region describes the ___

climate

____ is the holding together of molecules of the same substance

cohesion

the ___ is all the organisms (like plants and animals) that live together in certain defined areas

community

several students in a biology lab tested mealworms preference for damp or dry conditions. the students placed 50 mealworms one by one in the middle of a layer of paper towels with a damp area and a dry area. the mealworms were allowed to move freely over the paper towel for 10 min. after 10 minuites the students noted the location of each mealworm.... which of the following would provide the most accurate results for an experiment?

compare a large sample size from multiple trials

the part of the experiment that is established to dtermine what happens under normal conitions

control

in an experiment, one group that is tested does not experience any change in variables that are being studied. what is that group called

control group

which of the following is an example of a dependent variable?

counting the number of seeds that sprout in 10 different containers that recieved different types of fertilizer

breaking which type of bond would require the most energy?

covalent

bacteria can also return nitrogen to the atmosphere as nitrous oxide or nitric oxide in a reacion called

denitrification

the part of the experiment that is measured to determine the effects of the experiment

dependent variable

which of the following is an example of a testable question?

does increasing the tempature of water cause salt to dissolve at a faster rate?

which of the following is an example of a testable question?

does increasing the tempature of water cause salt to dissolve faster?

___ is the study of the relationships between organisms and their enviorment

ecology

the interactions between a community of living things and its physcial enviroment make up an

ecosystem

what level of organization best describes a group of living organisms and their abiotic enviorment?

ecosystem

the ____ has a negative charge and orbits the nucleus

electron

atoms interact by transfering and sharing the outermost ____

electrons

ions are made by transfering

electrons

_____ form when electrons are shared

electrostatic bonds

a substance that only contains one type of atom is called an

element

green plants storing solar energy is an example of ___

endothermic reaction

when atoms share electrons, it is rarely ___

equal

the ecosystem contains a mixture of salt and fresh water where a river flows into the ocean

estuary

which of the following is NOT one of the 3 ways water returns to the ocean?

evaporation

a bonfire is an example of an

exothermic reaction

a testable question states a general observation of nature

false

all questions in science are testable

false

all questions in science are testable.

false

biotic are the nonliving parts and abiotic are the living parts of an ecosystem

false

covalent bonds are relativley weak bonds and form ions in water

false

during cellular respiration, carbon dioxide CO2 is used by plants to make carbohydrates

false

hydrogen bonds are in the same kind of bonds as ionic bonds

false

hydrogen bonds are much stronger than ionic and covalent bonds

false

most elements nucleui are not stable in their natural state

false

solutions are mixtures that have a gel phase and a sol phase

false

the neutron is the most important part of the atom in forming compounds

false

the shared electrons in water are pulled closer to the carbon atom

false

what are graphical representations of relationships between animals and plants in an ecosystem collectivellty called?

food web

does adding fertilizer have an affect on the growth rate of a plant? what is the dependent variable in this question?

growth rate

a scientist wanted to learn more about population growth in baceteria. the scientist wanted to know "does storing bacterial cultures at a lower tempature affect the growth rate of the bacterial populations?" in this scenario what is the dependent variable?"

growth rate of the population

the stronger the bond the ___ it is to break

harder

a ___ mixture is one in which the substances are evenly distributed throughout the mixture

homogeneous

which of the following questions would basic research be used to answer?

how do dragon flies reproduce?

___ bonds hold many molecules together and ___ bonds hold a molecule together

hydrogen covalent

all of earths water, including both surface (examples--oceans, seas, rivers, lake, and streams) and subsurface water (ground water) are called the

hydrosphere

the periodic table arranges elements on the basis of

increasing atomic number

the part of the experiment that the scientist changes in order to test the effects

independent variable

species must be able to tolerate changes in temp and water levels in the ___ zone

intertidal zone

___ form when electrons are donated and accepted

ionic bonds

when the pH in the stomach increases from 2 to 4, how does the hydrogen ion concentration change?

it decreases by a factor of 1

what is a hypothesis?

it is a statemnt of what the researcher thinks will happen in an experiment

a solution with a pH of 10 is ____ than a solution with a pH of 12

less acidic

compouunds that have hydrogen bonding usually exist as _____ at room temp

liquids

the independent variable is the variable ___

manipulated by the scientist running the experiment

several students in a biology lab tested mealworms preference for damp or dry conditions. the students placed 50 mealworms one by one in the middle of a layer of paper towels with a damp area and a dry area. the mealworms were allowed to move freely over the paper towel for 10 min. after 10 minuites the students noted the location of each mealworm.... which conclusion best supports the data collected in both experiments?

mealworms are more strongly influenced by food than damp or dry coditions

___are composed of 2 or more substances not chemically joined together

mixtures

compounds that have hydrogen bonds tend to have ___melting and boiling points

moderate

why should you preform multiple trials of experiments ?

multiple trials provide more results in order to eliminate inconsistencies due to human error

which oceanic zone contains the highest number of photosynthetic plankton and algae

neritic zone

the ___ has no charge and is found inside the nucleus

neutron

carbon 14 is a radioactive isotope used to determine the age of ancient objects composed of organic matter. carbon 12 and carbon 13 are other isotopes of carbon. the number of what subatomic particals varies among these carbon isotopes?

neutrons

___ is the role (job) of an organism has in a community

niche

True

plural questions should have plural answers.

bc water is an ___ molecule, one end of it is attracted to another end of a different water molecule

polar

___ is a group of individuals belonging to one species usually occupying a defined area

population

which pair below are isotopes?

potassium-19 & potassium-20

in a chemical equation-- the substances that are finishing materials after the reaction on the right hand side of the equation are called

products

the ____ has a positive charge and is found inside the nucleus

proton

each element is different becuase their atoms have different number of

protons

the atomic number is based on the number of ___

protons

the energy given off by an element that has an unstable nucelui is called...

radiation

if a researcher makes an experimental observation that is contrary to well established scientific understanding, what should the next step be?

re-evaluating the procedure and replicating the experiment

in a chemical equation- the substances that are starting materials on the left hand side of the equation are called___

reactants

the part of the experiment that is analyzed in order to form a conclusion.

results

which of the following describes a controlled experiment

set up 10 plants with the same seeds, sunlight and water and vary the types of fertilizer

when you mix sugar and water, the sugar is the ___

solute

___ are mixtures where the solute is dispersed through the solvent so they stay mixed

solution

when u mix sugar and water, the water is the___?

solvent

what is the first step of the scientific method?

state the problem

hydrogen bonds are the ___ of the bonds that hold molecules together

strongest

the hydrogen bonding of water molecules results in water molecules having a higher ____

surface tension

an oil and vinegar salad dressing is an example of a

suspension

___ are mixtures where the solute is too large to stay mixed in the solvent

suspensions

which experimental design would provide scientist with the best data for investing which type of feed yields the greatest gain in lean muscle mass in cattle?

test 5 similar groups of cows with 5 different feed mixtures and measure their weight gain at the end of a 6 week trial

applied science involves research____

that is necessitated by the problems resulting from some current issue

half life is:

the amount of time needed for half of a sample of a radioactive element to decay by giving off radiation

how does a positive ion form?

the atom looses electrons

what is the primary factor that determines the polarity of a bond between atoms?

the difference in the relative attraction of electrons to each atom

does adding fertilizer have an affect on the growth rate of a plant? in this question, what is the independent variable?

the fertilizer

which should be included in a testable question?

the indepentent and dependent variables

the stability of an atoms nucleus depends on which of the following?

the neuton to proton ration in the nucleus

a scientist wanted to learn more about population growth in baceteria. the scientist wanted to know "does storing bacterial cultures at a lower tempature affect the growth rate of the bacterial populations?" in this scenario what is the independent variable?"

the tempature

variables in an experiment are...

things that can affect the outcome

what is the purpose of performing a controlled experiment?

to provide consistent results that can be repeated

78% of air is nitrogen gas

true

a charged atom is called an ion

true

a polar compound with one side having a negative charge and the other side a positive charge.

true

a pure sample of heluim gas will contain all the isotopes of helium in the sample

true

all living organisms have a pH window in which they can live

true

all matter is made up of atoms

true

an unstable nucleus will give off radiation in an effort to become stable

true

chemical equations can display information concerning the energies involved in a chemical reaction

true

chemical equations symbollicllay represent chemical reactions

true

human activites can deliberately or inadvertly alter the dynamics in ecosystems

true

hydrogen bonding not only occurs in complex biological molecules, but it also occurs in water and ammonia molecules

true

ionic compounds form ions in water

true

it is important to run an experiment many, many times to get valid results

true

it takes a large amount of energy to seperate the hydrogen bonds that hold water molecules together

true

most aquatic plants live in a pH window from 4.5 to 7.0

true

negative ions have more electrons than protons

true

nitrification is the process where ammonia ions are changed into nitrates and are then taken up by plants to form amino acids

true

nuclei which are unstable tend to give off energy to become stable nuceli; this energy given off is called radiation

true

organisms both cooperate and compete in ecosystems

true

positively charged ions are attracted to negativly charged ions , and negatively charged ions are attracted to positively charged ions

true

precipitation is the primary connection in the water cycle that provides for the delivery of the atmosphere water to the earth

true

the atomic mass number of an element is the sum of the protons and neutrons located in the nucleus of the atom

true

the oxygen cycle is the cycle where photosynthetic organisms take in carbon dioxide and release oxygen gas into the atmosphere

true

the oxygen gas is taken in by animals for respiration which in turn releases carbon dioxide back into the atmosphere

true

water expands when it freezes

true

water is a polar molecule

true

water is an example of a polar compound

true

water is found in nature in a liquid state, solid state and a gas state

true

permafrost is a layer of frozen soil found in which biome

tundra

dr. hansen performs an experiment testing the effectivness of different cough syrups. identify the indepentent variable in the experiment

type of cough syrup

which of the following is an example of an independent variable ?

using different brands of fertilizers on 10 different containers of plants

___ are things that can affect the outcome of an experiment

variables

___ is the universal solvent

water

all of the following are examples of biotic factors excpet

water

why do plants grow is a general question? which of the following demonstrates a testable question for plant growth??

will adding fertilizer to a plant increase the plant height after 3 weeks?

why do plants grow? is a general question. Which of the following demonstrates a testable question for plant growth?

will adding fertilizer to a plant increase the plant height after 3 weeks?


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