Childress Fall

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

How many electrons are in the third energy level of a magnesium atom. Fig 6-1

2

Refer to table 6-1 of acid-base indicators. A small volume of dilute hydrochloric acid is placed in a beaker, and two drops of Fino phenylene are added. The solution remains colorless. A dilute solution of sodium hydroxide is an added drop by drop until a color change occurs. And what pH range does the color change occur? Describe the color change that occurs.

7 to 14 pH turns pink

From figure 1-2, predict the mass of the plant at the day 110.

80

Any substance that forms hydrogen ions in water is a(n)

Acid

Any structure behavior or internal process that enables an organism to better survive in an environment

Adaptation

Using figure 1 Dash two, what is the mass of the plant at the 50?

Around 38 to 39 grams

If you exhale carbon dioxide (C02) into a solution of bromothymol blue, the solution turns from blue to yellow. Does CO2 dissolve in water to form an acid or a base? Use table 6-1 of acid-base indicator's to answer

CO2 dissolves in water to form an acid because it lowers the pH of the bromothymol blue

An organic compound with a ratio of about two hydrogen atoms and one oxygen atom for each carbon atom is a(n)

Carbohydrate

Adams of two or more elements chemically combined are

Compounds

Two Adams that share electrons are held together by ———— bonds

Covalent

The series of changes that an organism undergoes during its lifetime

Development

What is the control?

Dish without saliva

Which test tube is the control? Explain its purpose.

Egg stays the same the whole time. Therefore test tube number one is the control

It's flow through ecosystems determines how organisms interact and powers out all life processes

Energy

The living and nonliving factors in an organism surroundings

Environment

Protein that speeds up an Chemical reaction

Enzyme

Over time, gradual changes and structures, behaviors, and internal processes of organisms result in diversity of species

Evolution

How does the graph in figure 1 -2 indicated that growth takes place from Day 20 today 60?

Exponential Period.

Counts or measurements are examples of data that are produced by descriptive research.

Fakse, quantitative research

A natural law is based on the analysis of data collected in a controlled experiment.

False, Results

The great northern coniferous forests are part of the tundra biome

False, Taigs

A pioneer community is usually the stable result of succession

False, climax community

Biologists generally form hypotheses using deductive reasoning

False, inductive reasoning

For ease of understanding, scientist report measurements using the English system

False, metric

A centrifuge is used to make small details of an object visible to a scientist

False, microscope

Light intensity is a major limiting factor of the tundra biome

False, temperature

In an experiment, the control group is used to test the effect of the independent variable.

False, the experimental group

A law is a possible explanation for a scientific question.

False, theory

The range of factors under which an organism functions and survives are it's limiting factors.

False, tolerance.

In figure 6-1 which atom forms an ion by the loss of electrons

Hydrogen

Which compound shown in figure 6-1 is formed by a covalent bonding

Hydrogen fluoride

What is an alternative hypothesis the student might have formed?

If no dog saliva is applied to a wound then the growth of the bacteria increases

What is the hypothesis on which the experiment is based?

If the HCl his present then the enzyme will digest protein.

Atoms of the same element with different numbers of neutrons are

Isotopes

Which compound shown in figure 6 Dash1 is formed by ionic bonding

Magnesium chloride because they don't share electrons

How might the student have measured the growth rate of the bacteria to be sure about whether there was a difference in the rate of growth in the twos dishes?

Measure how big it is each day by comparing sizes and weights.

all the chemical changes that occur within an organism

Metabolism

When a grouse eats berries, the berry seeds are eliminated as waste materials and maybe dropped in another part of the forest where they may sprout and eventually grow into New berry plants. How would you classify the relationship between the berry plant and the grouse? Explain your reasoning. Referred to figure 2-3.

Mutualism because both organisms are benefit it.

Biology is a continuous search for information about the natural world

Nature of science

The smaller subunits the make up nucleic acids are

Nucleotide

Molecule with unequal distribution of charge

Polar molecule

Large molecule formed when many smaller molecules bond together

Polymer

What part of the scientific method is illustrated instep a? Step be?

Question, hypothesis

The process whereby an organism produces more of its own kind

Reproduction

Organisms depend on an internal and external systems that interact and complex ways to help them perform their life functions

Systems and interactions

How could you describe the niche and habit of the Marmot? Referred to figure 2 -3

The Marmot eat grasses and are the prey of the grizzly bear.

What is the dependent variable!

The bacteria growth

Why might the exponential design and Stephanie be a better test of the students hypothesis then the design used in step see?

The bacteria is added, not grown on the dog (meaning it would be more realistic)

Using figure 1 Dash two, what would you predict about the height of the plant during this time,

The corn plant will grow at an exponential rate.

Describe the growth rate of the plant during the final stage compared with the rate during the exponential., As shown in figure 1-2.

The growth rate of the plant slows down to eventually stop once the corn plant reaches carrying capacity.

Where is the hypothesis correct? Why?

The hypothesis is correct because pepsin did cause a reaction

Why were both dishes covered?

To prevent experiment to be affected by contaminated air

A sonogram is a picture of sound

True

Age, physical condition, and stage in the lifecycle may all influence an organisms limits of Torrance

True

Biologists discover problems by observing the world around them.

True

Limiting conditions usually fall midway between an organisms limits of tolerance

True

Phytoplankton are usually found concentrated in the euphoric zone of the ocean

True

The liter is a metric unit of volume

True

Whether application of science to everyday life are considered good, bad, right, or wrong comes under the category of technology

True

Which test tube or tubes are the experimental group? Why do you say so?

Two, three, four or experimental group because they test the dependent variable

Although different organisms interact with and ecosystems to form a stable system, all living things share the same characteristics of life

Unity within diversity

Using table 1 -2, how does the mother's rate of weight gain compare with the rate of weight gain of the developing fetus?

When the mother gains weight, the fetus does too

From the experiment, does HCl digestprotein? How do you know?

Yes, it increases the digestion rate when mixed with protein.

Glucose polymer that forms the cell walls of plants

cellulose

The gradual change in the characteristics of a species overtime

evolution

A variety of structural and behavioral adaptations help organisms regulate their internal environment

homeostasis

An organisms tendency to maintain a stable internal environment

homeostasis

Center of an atom

nucleus

Bond formed between two amino acids

peptide

Mixture in which one substance is distributed evenly in another

solution

Herd animals are usually concentrated in the forest biome.

Fslse, grassland

During which periods does the greatest amount of growth take place as shown in figure 1-2.?

The graphs grows slowly, not exponentially.

Write a conclusion to the experiment. Base your conclusion on the experimental results shown in table 6 -2

The reaction rate Of digestion is highest win pepsin and Hydro chloric acid are combined with the egg.

What is the independent variable in the student's experimental design?

The saliva of the dog


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