AnswersNM-Biology A Summer SchoolUnit Test

Unit Test — Cumulative exam Answers

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21
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Most scientific questions are based on

A
opinions.
B
hypotheses.
C
observations.
D
experimental data.
22
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Which is the best reason for using a temperature probe instead of a simple laboratory thermometer?

A
to make measurements in degrees Celsius
B
to make measurements in degrees Fahrenheit
C
to record continuous measurements over several minutes
D
to record individual measurements several times in a day
23

A testable hypothesis could be formed from which question?

A
Are bass more active in the daytime than at night?
B
When whales jump out of water, are they happy?
C
Are red tulips prettier than tulips of other colors?
D
Why are gerbils more popular as pets than hamsters are?
24

A student uses paper towels to clean up a small chemical spill in the lab. Where should the dirty paper towels be placed?

A
in the lab sink
B
in the wastebasket
C
in the chemical waste container
D
in the hazardous waste container
25

John doesn’t think that skepticism should play an important role in the scientific process. He says that skepticism interferes with scientific consensus. Which statement best describes John’s conclusion?

A
It is incorrect because skepticism helps scientists recognize when ideas are not supported by evidence.
B
It is correct because skepticism prevents the acceptance of creative ideas and new discoveries.
C
It is correct because skepticism prevents scientists from testing new ideas and communicating with other scientists.
D
It is incorrect because skepticism leads to the acceptance of new ideas, which can eventually gain scientific consensus.
26

How should you test a hypothesis?

A
by writing a mathematical equation
B
by making a single observation
C
by performing a controlled experiment
D
by answering a series of questions
27

Carlos is heading a student council project to improve cafeteria meals. He surveyed all students who eat cafeteria lunches to find out which of the five weekly cafeteria options they like least. What steps should Carlos take to best display this data?

A
He should total the votes for each of the options and plot these five values in a pie chart.
B
He should total the votes for each of the options and plot these five values in a line graph.
C
He should average the votes for each of the options and list the averages in a data table.
D
He should analyze the votes for each option and summarize the findings in a paragraph.
28

What do hypotheses, theories, and laws have in common?

A
data
B
predictions
C
explanations
D
observations
29

Max wants to see if mice that are fed food A grow faster than mice that are fed food B. He measures the mass of the mice each day. He feeds each group the same amount of food at the same time each day. What is the dependent variable?

A
food A
B
food B
C
mass of mice
D
amount of food
30

Look at this picture.What is a scientific question that could be asked about the picture?

Question illustration
A
Does the butterfly primarily visit orange flowers?
B
What color are the butterfly’s stripes?
C
What kind of butterfly is shown?
D
Why did the butterfly land?
31

The photograph shows a herd of zebra in the African savanna.What is the highest level of organization that is represented in the photograph?

Question illustration
A
organ
B
organism
C
ecosystem
D
population
32

What is a caliper used for?

A
to make a precise measurement of volume
B
to make a temperature measurement with low precision
C
to make a volume measurement with low precision
D
to make a precise measurement of length
33

Which tool is used to measure a single, specific volume of liquid?

A
a beaker
B
a graduated cylinder
C
a buret
D
a volumetric flask
34

Which is the correct order in the scientific process?

A
ask a question ® form a hypothesis ® make an observation
B
ask a question ® make an observation ® form a hypothesis
C
make an observation ® form a hypothesis ® ask a question
D
make an observation ® ask a question ® form a hypothesis
35

Lee and Celia are lab partners. While Celia pours a chemical into a graduated cylinder, some of the chemical splashes onto her arm. What should happen next?

A
Lee should continue working with Celia after helping wipe off her arm.
B
Lee should tell the teacher what happened to Celia when he leaves the lab.
C
Lee should tell the teacher while Celia washes her arm with soap and water.
D
Celia should stand in the safety shower while Lee tells the teacher.
36

Choose the best scientific design to test the question “Which soil type results in the highest yield of tomatoes: clay soil or sandy soil?”

A
Measure the growth of 10 tomato plants that are grown in clay soil, and compare it to the growth of 10 tomato plants that are grown in sandy soil.
B
Measure the growth of a tomato plant that is grown in clay soil, and compare it to the growth of a tomato plant that is grown in sandy soil.
C
Count the number of tomatoes that are produced by a tomato plant that is grown in clay soil, and compare it to the number of tomatoes that are produced by a tomato plant that is grown in sandy soil.
D
Compare the average number of tomatoes that are produced by 10 tomato plants that are grown in clay soil to the average number of tomatoes that are produced by 10 tomato plants that are grown in sandy soil.
37

Which action is designed to increase the safety of a person carrying a microscope from one place to another?

A
putting a cover over the microscope
B
setting the microscope to the high-power objective position
C
wrapping the electrical cord around the arm of the microscope
D
raising the stage of the microscope until it touches the objective
38

The development of a new experimental method is most likely to change a theory if it makes it possible to

A
analyze samples when they are frozen.
B
perform the experiment in a different lab.
C
obtain and analyze results more quickly.
D
study a larger sample size than before.
39

Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. He plans to generate a graph of the temperature values over time and insert the graph into a text document. Which pair of tools would be best for Silus to use?

A
a liquid-based thermometer and a graphing calculator
B
a liquid-based thermometer and a computer
C
an electronic temperature probe and a computer
D
an electronic temperature probe and a graphing calculator
40

Which occurs directly before forming a hypothesis?

A
proposing a law
B
drawing a conclusion
C
developing a testable question
D
analyzing experimental data

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