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Unit 1 Test - Biology

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
Which of the following statements about a compound is true?
a.
The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed.
b.
Only the physical properties of a compound are usually the same as those of the elements from which it is formed.
c.
Only the chemical properties of a compound are usually the same as those of the elements from which it is formed.
d.
The physical and chemical properties of a compound are usually the same as those of the elements from which it is formed.
 

 2. 
The energy needed to get a reaction started is the
a.
adhesion energy.
b.
activation energy.
c.
cohesion energy.
d.
chemical energy.
 

 3. 
Based on your observations, you suggest that the presence of water could accelerate the growth of bread mold. This is
a.
a conclusion.
b.
a hypothesis.
c.
an experiment.
d.
an analysis.
 

 4. 
A personal preference or point of view is
a.
a bias.
b.
a theory.
c.
a hypothesis.
d.
an inference.
 

 5. 
The work of scientists usually begins with
a.
testing a hypothesis.
b.
careful observations.
c.
creating experiments.
d.
drawing conclusions.
 

 6. 
Which of the following is NOT a characteristic of all living things?
a.
growth and development
b.
ability to move
c.
response to the environment
d.
ability to reproduce
 

 7. 
A covalent bond is formed as the result of
a.
transferring electrons.
b.
sharing electrons.
c.
transferring protons.
d.
sharing protons.
 

 8. 
A substance with a pH of 6 is called
a.
an acid.
b.
a base.
c.
water.
d.
a suspension.
 

 9. 
Which of the following characteristics of living things best explains why some North American birds fly south for the winter?
a.
Living things respond to their environment.
b.
Living things maintain internal balance.
c.
Living things are made up of units called cells.
d.
Living things are based on a universal genetic code.
 

 10. 
What are the smallest objects that biologists study?
a.
cells
b.
body organs
c.
molecules
d.
organisms
 

 11. 
How does sharing ideas through peer-reviewed articles help advance science?
a.
Peer-reviewed articles are published only when the ideas they contain have been accepted by most scientists.
b.
Experiments in peer-reviewed articles do not need to be repeated.
c.
Scientists reading the articles may come up with new questions to study.
d.
Ideas in the articles always support and strengthen dominant theories.
 

 12. 
How many meters are in 2.4 km?
a.
240
b.
2,400
c.
24,000
d.
240,000
 

 13. 
Which of the following is NOT a goal of science?
a.
to investigate and understand the natural world
b.
to explain events in the natural world
c.
to establish a collection of unchanging truths
d.
to use derived explanations to make useful predictions
 

 14. 
How does society help science advance?
a.
Society’s biases steer scientists toward studying certain ideas.
b.
Society produces technology that can be used in science.
c.
Society’s morals help scientists make good decisions.
d.
Society raises questions that science can help answer.
 

 15. 
The process by which organisms keep everything inside their bodies within certain limits is called
a.
homeostasis.
b.
evolution.
c.
metabolism.
d.
photosynthesis.
 

 16. 
Information gathered from observing a plant grow 3 cm over a two-week period is called
a.
inferences.
b.
variables.
c.
hypotheses.
d.
data.
 

 17. 
A theory
a.
is always true.
b.
is the opening statement of an experiment.
c.
may be revised or replaced.
d.
is a problem to be solved.
 

 18. 
Which of the following makes up a molecule of water?
a.
one atom of hydrogen and one atom of oxygen
b.
one atom of sodium and one atom of chlorine
c.
one atom of hydrogen and two atoms of oxygen
d.
two atoms of hydrogen and one atom of oxygen
 

 19. 
Which of the following is NOT a function of proteins?
a.
store and transmit genetic information
b.
help to fight disease
c.
control the rate of reactions
d.
move substances into or out of cells
 

 20. 
What are found in the space surrounding the nucleus of an atom?
a.
protons
b.
electrons
c.
neutrons
d.
ions
 

 21. 
What does a reviewer do during peer-review?
a.
Focus on mistakes in spelling.
b.
Change data to support results.
c.
Check for mistakes and bias.
d.
Repeat the experiments in the article.
 

 22. 
Identify the reactant(s) in the chemical reaction, CO2 + H2O → H2CO3.
a.
CO2, H2O, and H2CO3
b.
CO2 and H2O
c.
H2CO3
d.
CO2
 
 
nar001-1.jpg
Figure 1–1
 

 23. 
Figure 1–1 illustrates which characteristic of living things?
a.
Living things grow and develop
b.
Living things are made up of cells.
c.
Living things need material and energy.
d.
Living things reproduce.
 

 24. 
Which of the following statements is true about catalysts?
a.
Catalysts slow down the rate of chemical reactions.
b.
All catalysts are enzymes.
c.
Catalysts are used up during a chemical reaction.
d.
Catalysts lower the activation energy of a chemical reaction.
 
 
nar002-1.jpg

Figure 1–2
 

 25. 
Figure 1–2 shows that tree finches and ground finches are descended from a common ancestor. This example represents which big idea in biology?
a.
interdependence in nature
b.
growth, development, and reproduction
c.
homeostasis
d.
evolution
 

 26. 
During a controlled experiment, a scientist isolates and tests
a.
a conclusion.
b.
a mass of information.
c.
a control group.
d.
a single variable.
 

 27. 
A scientist working in which area of biology is MOST likely to study DNA?
a.
information and heredity
b.
cellular basis of life
c.
matter and energy
d.
interdependence in nature
 

 28. 
The three particles that make up atoms are
a.
protons, neutrons, and isotopes.
b.
neutrons, isotopes, and electrons.
c.
positives, negatives, and neutrals.
d.
protons, neutrons, and electrons.
 

 29. 
Science is best described as a
a.
set of facts.
b.
way of knowing.
c.
collection of beliefs.
d.
list of rules.
 

 30. 
Cells in multicellular organisms have many different sizes and shapes. These differences in cells is called cell specialization. Cell specialization allows cells to
a.
reproduce.
b.
perform different functions.
c.
respond to their environment.
d.
be less complex.
 

 31. 
Would a scientist who studies evolution also have to learn about other branches of biology? Why or why not?
a.
Yes; the other branches of biology are more important.
b.
Yes; the different branches of biology are interrelated.
c.
No; the other branches of biology do not affect evolution.
d.
No; each branch of biology is separate from the others.
 

 32. 
Focusing on which two central themes in biology would help a student understand why animals come in different shapes and sizes?
a.
cellular basis for life; homeostasis
b.
structure and function; unity and diversity of life
c.
matter and energy; homeostasis
d.
science as a way of knowing; interdependence of nature
 

 33. 
The basic unit of length in the metric system is the
a.
gram.
b.
liter.
c.
yard.
d.
meter.
 

Modified True/False
Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true.
 

 1. 
An important goal of a scientist is to use evidence to learn about the natural world. _________________________

 

 2. 
For a hypothesis to have value, it must be testable. _________________________

 

 3. 
Most plants and animals reproduce asexually. _________________________

 

 4. 
The smallest units in living things that are considered to be alive are organisms. _________________________

 

 5. 
All forms of life are connected to each other in a biosphere, which means a “living planet.” _________________________

 

 6. 
Biologists study life on all levels from molecules to the entire planet.  _________________________________

 

 7. 
The metric system is based on multiples of 100. _________________________

 



 
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