FTCE Biology
Why is it important to pick up slides from the sides? Prevents contamination Prevents the slides from breaking Keeps fingerprints off the slides Prevents the specimen from coming loose
Keeps fingerprints off the slides
What do light microscopes use to magnify objects? Films Glass spheres Mirrors Lenses
Lenses
Why is it important that an object is very small or thin in light microscopy? It needs to be heated quickly. The object needs to go into the objective lens. Light needs to transmit through the sample. None of the above; the object should be large.
Light needs to transmit through the sample.
The pH scale is a _______ scale. Pound Weight Newton Logarithmic
Logarithmic
What is the best use of a beaker? Heating substances Transferring one drop of substance at a time Mixing and pouring substances Dissecting organisms Measuring accurate volumes
Mixing and pouring substances
Which of the following is the best way to get rid of a hazardous biological substance you no longer need? Dump it down the sink Just throw it in the regular trash Flush down the toilet Neutralize it and then dispose it into a hazardous waste receptacle
Neutralize it and then dispose it into a hazardous waste receptacle
Which of the following is not a part of a light microscope? Stage Condenser Objective lens Occupier
Occupier
Which of the following kind of microscope first allowed us to view living cells? Scanning probe microscopes Electron microscopes Optical microscopes Magnifying glasses
Optical microscopes
This is a process where scientific experts not connected to the study and experiment in question check it for scientific accuracy, proper methodology, and relevancy. Scientific research Peer review A theory A hypothesis Scientific method
Peer review
Which two methods are used to help attach the stain to the cell structures? Mordant and fixative application Permebilization and mordant application Mounting medium and fixative application Alcohol & acetic acid mixture
Permebilization and mordant application
When a substance dissolves another substance, it is the _____. Dissolving agent Solvent Solution Solute
Solvent
Which of the following statements is FALSE? Crystal violet and safranin are used as bacteria stains. Stains are taken up by the bacteria's nucleus. Gram negative cells show up as pink. Gram positive cells show up as purple.
Stains are taken up by the bacteria's nucleus.
What should you do with substances that are heating? Work on other things and check them periodically Set the heat to low so that it takes a long time to heat None are correct Leave them until they boil, then come back Stay with them at all times
Stay with them at all times
What is recombinant DNA made of? Target DNA and bacterial plasmid none are correct All the DNA from the bacterial cell Target DNA and DNA ligase Restriction enzyme and target DNA
Target DNA and bacterial plasmid
What should you do if a substance is not labelled? Throw it in the trash Mix it with something to see if it reacts Tell your lab instructor Taste it to find out what it is Put a new label on it if you can guess what it is
Tell your lab instructor
Which of the following concepts best describes a chlorophyll molecule absorbing light and changing it into chemical energy? Newton's Third Law of Motion The Law of Conservation of Energy Bernoulli's Principle Boyle's Law The Second Law of Thermodynamics
The Second Law of Thermodynamics
What is proteomics? The study of proteins The study of genomes The study of proteomes The study of genes The study of humans
The study of proteomes
Which of the following summarizes an accepted hypothesis tested by many scientists? Theory Law Analysis Conclusion Observation
Theory
Which of the following is FALSE about nonrenewable natural resources? They're in limited supply. They can last forever if properly managed. They include metals. They include crude oils.
They can last forever if properly managed.
Which is NOT a reason that bacteria are often the first choice for cloning DNA? Bacteria reproduce quickly Bacterial plasmids carry genetic information to each successive generation They make delicious bread and beer Many bacteria are not harmful Bacteria can be used safely in the lab
They make delicious bread and beer
What is the purpose of a ventilation hood? None are correct To reduce the risk of explosion To provide a safe breathing area if there is a lab explosion To contain lab fires To contain gases, fumes, and vapors
To contain gases, fumes, and vapors
_____ revolutionized dissection in the 16th century Darwin Vesalius Copernicus Galen
Vesalius
Which of the following is NOT a lab safety rule? Don't eat or drink in the lab All are correct Wash your hands Report all spills Wear loose clothing
Wear loose clothing
Which type of slides are the easiest to prepare? Dry mount Electron Wet mount Prepared mount
Wet mount
How can you identify a syringe filled with a chemical substance? Take a good guess based on what you see inside the syringe. You prepared it! There's no reason to label it. You'll always remember what's inside. Write on the syringe with a permanent marker or place a sticker/label on it that identifies the contents. Look at the size of the syringe to identify what's inside of it.
Write on the syringe with a permanent marker or place a sticker/label on it that identifies the contents.
A single assertion, a proposed explanation of something based on available knowledge, for something yet to be explained, one that is subject to further experimentation is called: Statistical significance Scientific Research peer review a hypothesis a theory
a hypothesis
A student finds a bat sleeping on the ground outside the school and asks to bring it inside to show the class. The teacher should deny this request and caution everyone to stay away from the bat because bats are Choose an answer very aggressive and are likely to attack anyone who comes close. colonial animals and are likely to kill any bat that has a human scent on it. highly excitable and are likely to die if they are handled by humans. often carriers of rabies and are likely to bite if they are infected with this disease.
often carriers of rabies and are likely to bite if they are infected with this disease.
Which of the following is a product of DNA cloning? vaccines all are correct 'Clean-up' bacteria clothing Pest-resistant plants
all are correct
The area of a rectangle can be found by multiplying its length by its width. What is the area of a rectangle that is 5.6 cm in length and 9.24 cm wide?</p><p>Report your answer with the correct number of significant figures.
area=lxw a=5.6x9.24 a=51.744 correct signifigant figures = 2 answer=52
A controlled experiment tests how many variables at one time? four three none one two
one
Which is a process that requires feedback from the scientific community? experiment conclusion question peer review
peer review
Which of the following types of data is considered quantitative? Choose an answer plant height flower color bird species fish gender
plant height
Oswald Avery used _____ in order to rule out protein as the transforming principle in his experiment. ribonuclease protein-digesting enzymes lysate precipitate deoxyribonuclease
protein-digesting enzymes
Farmers currently use genetically enhanced varieties of seed because these varieties Choose an answer provide greater resistance to disease and pests. yield crops that require less labor to harvest. reduce soil loss on erosion-prone land. increase biodiversity in native populations.
provide greater resistance to disease and pests.
At what step in the scientific method does a scientist propose the problem that he or she wants to solve? hypothesis question experiment analysis
question
The measure or assessment of consistency of scores across time or different contexts is called ____________________. external validity reliability ecological validity internal validity face validity
reliability
Natural resources include________________ renewable and nonrenewable energy sources that we take and use from the environment only renewable energy sources that we take and use from the environment only nonrenewable energy sources that we take and use from the environment chemical compounds that we release into the environment
renewable and nonrenewable energy sources that we take and use from the environment
In order for a scientist's work to be accepted, other scientists must be able to ________________ the experiment. refute analyze disprove observe repeat
repeat
Oswald Avery ruled out RNA as the transforming principle by using ____________________ in his experiments. lysate precipitate ribonuclease protein digesting enzymes deoxyribonuclease
ribonuclease
Homogeneous mixtures are also called pure substances solutions compound elements
solutions
Renewable natural resources are substances that can be replenished over a period of time. Which of the following is an example of a renewable natural resource? Metals Crude oil Sunlight Coal
sunlight
An experiment should show that a hypothesis is either: peer reviewed or not reviewed correct or incorrect supported or not supported right or wrong
supported or not supported
A statistic for measuring how much a trait in one twin compares or contrasts with the same trait in the other twin is the________________________ correlation coefficient heritability rate genetic coefficient concordance rate
correlation coefficient
If a research study is so specific and strange that it does not have any real world application, we can say that the study has a low level of _____________. face validity ecological validity reliability external validity internal validity
ecological validity
Which of the following is not a human need that is included in the estimate for a person's ecological footprint? Waste disposal food housing education
education
Neuroticism is a term used by psychologists to describe a tendency of certain people to experience negative emotions suffer from depression obsess over minor details struggle to make friends maintain a positive outlook
experience negative emotions
A group of researchers want to make sure that any results they find in a particular group of participants would also be true for other people, in other places, in studies with other researchers. If a study can do this, we can say that the study has a high level of ___________________. ecological validity external validity reliability face validity internal validity
external validity
A researcher performed a study in which she concluded that children who have parents who read to them at home have better reading skills at school. However, she only included children in the top reading level at school, and no children who have trouble reading. Because she only included one group, and not all groups of children, her study probably has a low level of ____________________. reliability external validity internal validity ecological validity face validity
external validity
In family studies, the proband refers to the_____________________ first person being studied first-degree relatives of the study's subject trait being studied second-degree relatives of the study's subject
first person being studied
The Minnesota Twin Study found that______________________ fraternal twins raised apart are about as similar as those raised together fraternal twins raised apart are very different from those raised together identical twins raised apart are about as similar as those raised together identical twins raised apart are very different from those raised together
identical twins raised apart are about as similar as those raised together
A research study where the cause-effect conclusions are accurate, and there are no other possible explanations for the results, has a high level of ___________________ validity. face internal external ecological population
internal
Which of the following is viewed as scientific fact with no exceptions? hypothesis law observation theory analysis
law
To be effective, a simple experiment must Choose an answer occur in a research laboratory. stand alone without replication. manipulate one variable at a time. validate the hypothesis being tested.
manipulate one variable at a time.
Which of the following are arranged from smallest unit to largest unit? mm, m, cm, km cm, m, mm, km mm, cm, m, km km, m, cm, mm cm, mm, m, km
mm, cm, m, km
Which sequence of events best describes a common scientific research methodology? Choose an answer hypothesize, experiment, observe, analyze observe, hypothesize, experiment, analyze hypothesize, observe, analyze, experiment observe, experiment, hypothesize, analyze
observe, hypothesize, experiment, analyze
Which of the following is the closest to a mass of 500 mL of water? 50 g 5 kg 500 kg 500 g 0.500 g
0.500 kilogram = 500 gram As the density of water = 1g/mL. Hence, 0.500 kg is the closest to the mass of 500 mL of water.
How many mL are in 3.4 L? 3,400,000 mL 0.0034 mL 0.34 mL 3.4 mL 3,400 mL
3400mL
How many significant figures are in 54,050? 3 2 4 5 1
4
About how much of your body weight is made up of macrominerals? 1% 4% 25% 0.001% 10%
4%
Simge's guinea pig weighs <i>exactly</i> 560. grams. Which of the following most accurately expresses the weight of Simge's guinea pig in scientific notation?
5.60 x10^2
If you add 50.0 mL of water to a beaker containing 22 mL of water, then how much water do you have in the beaker? 70.0 mL 70mL 70.mL 72.0mL 72mL
50.0+22=72mL
As of 2011, the human population reached over_______________________ 10 billion people 7 billion people 5 billion people 3 billion people
7 billion people
Why should you wear gloves when preparing chemical or biological materials? A. To protect your skin B. To protect the sample from contamination C. To protect your lungs
A and B
For accurate volume measurements, which is the best piece of equipment to use? An eyedropper A large beaker A graduated cylinder An Erlenmeyer flask A small beaker
A graduated cylinder
What might you use to run a reaction or observe substances in the lab? A large beaker A thermometer A Bunsen burner A test tube A graduated pipette
A large beaker
What is a good thing to have with your first aid kit? A list of emergency numbers Instructions on how to clean up chemical spills A fire extinguisher A list of common chemical reactions An emergency cell phone
A list of emergency numbers
Which of the following is the most heterogeneous mixture? Gasoline Air Distilled water A pizza
A pizza
What was the Human Genome Project? A study to determine which genes are responsible for which proteins A study to compare the human genome with the chimpanzee genome A study to determine all of the proteins in the human proteome A study to determine how many different genomes occur in humans A study to determine the location and sequence of every gene in the human genome
A study to determine the location and sequence of every gene in the human genome
Which piece of safety equipment is typically optional in a lab? Fire extinguisher All should be standard pieces of equipment in any lab Eye wash station Emergency shower First Aid Kit
All should be standard pieces of equipment in any lab
Which of the following is not an important safety rule to follow when dissecting? Always apply great force when using a scalpel. Always wear close-toed shoes. Use common sense with long hair and dangling jewelry. Always wear goggles.
Always apply great force when using a scalpel.
Which best describes a genome? An organism's entire set of genes All of the proteins for an entire species An organism's entire set of proteins All of the genes for an entire species The study of genes
An organism's entire set of genes
When should you read through the lab instructions? Just ask your partner to tell you the information Before doing the lab As you are doing the lab After completing the lab Lab instructions are not important
Before doing the lab
Which of the following is NOT a use of microscopy? Investigating bullets and DNA at crime scenes Learning about cells and the human body Assessing the quality of ecosystems Bird watching
Bird watching
How do mineralogists identify minerals using light microscopy? By identifying the shapes of the crystal grains. By seeing which mineral sparkles brightest in the light microscope. Minerals appear black in the light microscope. None of the above; mineralogists don't use microscopes.
By identifying the shapes of the crystal grains.
What did J. Craig Venter do? Created the whole-genome shotgun method Identified the genes we share with chimpanzees Proposed the Human Genome Project Laid out three, thorough steps to completing the Human Genome Project All are correct
Created the whole-genome shotgun method
An empty container has a mass of 62.000 grams. You fill it with 24.6 mL of a liquid. The final mass of the container is 81.34 grams. What is the density of the liquid to the correct number of significant figures?</p><p>(density of the liquid = mass of the liquid divided by the volume of liquid) 0.7862 g/mL 0.786 g/mL 1.272 g/mL 1.27 g/mL 0.79 g/mL
D=M/V D=81.34-62/24.6 D=.786
What is the mass of a liquid with a density of 2.12 g/mL and a volume of 53.0 mL (to the nearest gram)? 0.0400 g 25.0 g 55.1 g 50.9 g 112 g
D=m/v 2.12=m/53 53x2.12=m/53 x 53 112=m 112g
Oswald Avery answered the question he set out to investigate by showing that __________________ was the transforming principle in the Griffith experiment. the mouse the sugar coat the protien RNA DNA
DNA
The enzyme used to 'paste' together the DNA strands is called Restriction enzyme DNA stickase DNA ligase DNA polymerase DNA plasmid
DNA ligase
Scalpels are often used in dissection. What is a scalpel? Dissecting probe Dissecting knife Dissecting pin Tweezers
Dissecting knife
Forceps are often used in dissection. What are forceps? A small knife Dissecting scissors Dissecting tweezers Dissecting probe
Dissecting tweezers
Alcohol and water are best separated from one another by: Chromatography Manual separation Crystallization Distillation
Distillation
Which is a way to separate solid sugar from a solution of sugar water? Condensation Chromatography Evaporation Filtration
Evaporation
Which of the following statements is true? It's only important to know where safety equipment is during an accident, not before An eye wash station is a good place to rinse chemical spills from anywhere on your body Even with proper precautions lab accidents still occur All lab accidents are preventable It's wrong to call for help in case of an accident because you should have been more careful in the first place
Even with proper precautions lab accidents still occur
A scientist is running a test of her hypothesis. Which step of the scientific method is she executing? Observation Experiment Analysis Conclusion
Experiment
A key difference between science and religion, astrology, and pseudoscience is that scientific statements are: Unverifiable Always untrue Always true Untestable Falsifiable
Falsifiable
How should you dispose of substances in the lab? It depends on the specific instructions for each substance Wrap them in a paper towel before throwing them away Just leave it on your table, the instructor will clean up for you Throw them in the trash Wash them down the sink
It depends on the specific instructions for each substance
Which of the following is NOT true about lab safety equipment? It includes things like eye wash stations, emergency showers, and first aid kits You need to know where it is ahead of time They are mostly for mitigating harm to both the lab and people working in it It does not need to be inspected regularly A clear pathway should be maintained at all times
It does not need to be inspected regularly
If a statement is statistically significant, then: It's likely to have occurred due to chance alone It didn't occur at all It occurred due to chance It is unlikely to have occurred due to chance alone
It is unlikely to have occurred due to chance alone
When dispensing a drug, which of the following may need to be noted? I. The amount dispensed II. Who dispensed it III. The name of the drug dispensed I, II, III II only I only III only
I, II, III
What were Oswald Avery's objective results in his experiments? Random sampling of bacteria. Probabilities of transformation. Positive or negative indications of each factor. Measurements of bacterial density. Measurements of bacterial mass.
Probabilities of transformation.
Why are proteomes important to study? none are correct Proteins carry out cellular functions and processes Proteins make genes Because we know very little about them Proteins are much rarer in our bodies than genes
Proteins carry out cellular functions and processes
How have twin studies proven to be beneficial? Researchers can focus only on traits that run in families. Researchers can determine the difference between environmental and genetic factors. Researchers can focus on emotional factors rather than biological factors. Researchers can find the number of genes the twins share.
Researchers can determine the difference between environmental and genetic factors.
Which of the following types of microscopes work by running a physical probe across the surface of an object? Dark-field Optical Scanning probe Electron
Scanning probe
The systematic investigation of scientific theories and hypotheses is known as: None of these answers are correct Hypothesis Scientific Research Peer review Statistical significance
Scientific Research
Which of the following is NOT true about science? Scientists often rely on their experience. Scientists often use creativity. Scientists never compete with one another. Science journals usually require peer review.
Scientists never compete with one another.
Biology students performed an experiment to determine the effect of temperature on heart rate in the crustacean Daphnia. Each group of students exposed Daphnia to varying temperatures from 0 °C to 30 °C and measured the number of heartbeats per minute for three Daphnia after 1 minute of exposure to each temperature. An average was taken for the three Daphnia at each temperature. Identify the independent variable for this experiment. Choose an answer heart rate temperature number of crustaceans length of exposure
temperature (independent is the variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment)
In his experiments, Oswald Avery knew that the sugar coat was NOT the transforming principle because transformation occurred when _________________ was ABSENT. protien DNA RNA the sugar coat mouse blood
the sugar coat
Which of the following is NOT one of the six key steps of the scientific method? Observation Hypothesis Theory Experiment
theory
What might be used to clone DNA instead of bacteria? Yeast cells Bread Beer Pork chops All are correct
yeast cells
