Campbell Biology, 10th Edition Test Bank

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Campbell Biology, 10e (Reece)
Chapter 1 Evolution, the Themes of biology, and Scientific Inquiry
1) Cells are _____.
A) only found in pairs, because single cells cannot exist independently
B) limited in size to 200 and 500 micrometers in diameter
C) characteristic of eukaryotic but not prokaryotic organisms
D) characteristic of prokaryotic and eukaryotic organisms
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.1
2) In comparison to eukaryotes, prokaryotes _____.
A) are more structurally complex
B) are larger
C) are smaller
D) do not have membranes
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.1
3) Which of the following types of cells utilize deoxyribonucleic acid (DNA) as their genetic
material but do not have their DNA encased within a nuclear envelope?
A) animal
B) plant
C) archaean
D) fungi
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.1
4) To understand the chemical basis of inheritance, we must understand the molecular structure
of DNA. This is an example of the application of which concept to the study of biology?
A) evolution
B) emergent properties
C) reductionism
D) feedback regulation
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.1

2
5) A localized group of organisms that belong to the same species is called a _____.
A) community
B) population
C) ecosystem
D) family
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.1
6) Which of the following statements is FALSE regarding the complexity of biological systems?
A) An understanding of the interactions between different components within a living system is a
key goal of a systems biology approach to understanding biological complexity.
B) Knowing the function of a component of a living system can provide insight into its structure
and organization.
C) Understanding the chemical structure of DNA reveals how it directs the functioning of a
living cell.
D) An ecosystem displays complex properties not present in the individual communities within
it.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.1
7) When a person gets dehydrated while exercising on a hot day, their pituitary gland releases
ADH, a hormone that signals the kidneys to retain more water. This is an example of
A) Positive feedback regulation
B) Negative feedback regulation
C) Chemical cycling
D) Emergent properties
Answer: B
Bloom's Taxonomy: Application/Analysis
Section: 1.1
8) Prokaryotes are classified as belonging to two different domains. What are the domains?
A) Bacteria and Eukarya
B) Archaea and Monera
C) Bacteria and Protista
D) Bacteria and Archaea
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2

3
9) Which of these provides evidence of the common ancestry of all life?
A) near universality of the genetic code
B) structure of the nucleus
C) structure of cilia
D) structure of chloroplasts
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 1.2
10) Which branch of biology is concerned with the naming and classifying of organisms?
A) informatics
B) taxonomy
C) genomics
D) evolution
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2
11) The phylogenetic tree below _____.
A) depicts the three major domains of life
B) includes unicellular but not multicellular life
C) includes unicellular and some forms of multicellular life, but not complex animals and plants
D) includes noncellular life-forms
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2

4
12) In the diagram below, "A" is _____ ; "B" is _____.
A) the most recent species to evolve on Earth; an ancestor of group "A"
B) the most recent species to evolve on Earth; the last common ancestor of Archaea and Eukarya
C) the common ancestor of all life; the common ancestor of Bacteria and Archaea
D) the common ancestor of all life; the last common ancestor of Archaea and Eukarya
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2
13) You find yourself standing next to a beautiful rose bush. Which of the following do you and
the rose have in common?
A) You both are multicellular.
B) You both lack a membrane-bound nucleus.
C) You are both prokaryotic.
D) You and the rose have nothing in common.
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 1.2
14) Which of the following is (are) true of natural selection?
A) It requires genetic variation.
B) It results in descent with modification.
C) It involves differential reproductive success.
D) It requires genetic variation, results in descent with modification, and involves differential
reproductive success.
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2
15) Charles Darwin proposed a mechanism for descent with modification that stated that
organisms of a particular species are adapted to their environment when they possess _____.
A) non-heritable traits that enhance their survival in the local environment
B) non-heritable traits that enhance their survival and reproductive success in the local
environment
C) heritable traits that enhance their survival and reproductive success in the local environment
D) heritable traits that decrease their survival and reproductive success in the local environment
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2

5
16) Which of the following best describes what occurred after the publication of Charles
Darwin's On the Origin of Species?
A) The publisher was pressured to cease distribution.
B) The book was banned from schools.
C) The book was widely discussed and disseminated.
D) The book was discredited by most scientists.
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2
17) Darwin's finches, collected from the Galápagos Islands, illustrate which of the following?
A) mutation frequency
B) ancestors from different regions
C) adaptive radiation
D) vestigial anatomical structures
E) the accuracy of the fossil record
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.2
18) Cotton-topped tamarins are small primates with tufts of long white hair on their heads. While
studying these creatures, you notice that males with longer hair get more opportunities to mate
and father more offspring. To test the hypothesis that having longer hair is adaptive in these
males, you should _____.
A) test whether other traits in these males are also adaptive
B) look for evidence of hair in ancestors of tamarins
C) determine if hair length is heritable
D) test whether males with shaved heads are still able to mate
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.2

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The following experiment is used for the corresponding question(s).
A researcher discovered a species of moth that lays its eggs on oak trees. Eggs are laid at two
distinct times of the year: early in spring when the oak trees are flowering and in midsummer
when flowering is past. Caterpillars from eggs that hatch in spring feed on oak flowers and look
like oak flowers. But caterpillars that hatch in summer feed on oak leaves and look like oak
twigs.
How does the same population of moths produce such different-looking caterpillars on the same
trees? To answer this question, the biologist caught many female moths from the same
population and collected their eggs. He put at least one egg from each female into eight identical
cups. The eggs hatched, and at least two larvae from each female were maintained in one of the
four temperature and light conditions listed below.
In each of the four environments, one of the caterpillars was fed oak flowers, the other oak
leaves. Thus, there were a total of eight treatment groups (4 environments × 2 diets).
19) Refer to the accompanying figure. Which one of the following is NOT a plausible hypothesis
to explain the differences in caterpillar appearance observed in this population?
A) The longer day lengths of summer trigger the development of twig-like caterpillars.
B) The cooler temperatures of spring trigger the development of flowerlike caterpillars.
C) Differences in air pressure, due to differences in elevation, trigger the development of
different types of caterpillars.
D) Differences in diet trigger the development of different types of caterpillars.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3

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20) Refer to the accompanying figure. In every case, caterpillars that feed on oak flowers look
like oak flowers. In every case, caterpillars that were raised on oak leaves looked like twigs.
These results support which of the following hypotheses?
A) The longer day lengths of summer trigger the development of twig-like caterpillars.
B) Differences in air pressure, due to elevation, trigger the development of different types of
caterpillars.
C) Differences in diet trigger the development of different types of caterpillars.
D) The differences are genetic. A female will either produce all flowerlike caterpillars or all
twig-like caterpillars.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3
21) Refer to the accompanying figure. Recall that eggs from the same female were exposed to
each of the eight treatments used. This aspect of the experimental design tested which of the
following hypotheses?
A) The longer day lengths of summer trigger the development of twig-like caterpillars.
B) Differences in air pressure, due to elevation, trigger the development of different types of
caterpillars.
C) Differences in diet trigger the development of different types of caterpillars.
D) The differences are genetic. A female will either produce all flowerlike caterpillars or all
twig-like caterpillars.
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 1.3
22) Recall the caterpillar experiment in which caterpillars born in the spring looked like flowers,
and caterpillars born in the summer looked like twigs. What is the most likely selective
advantage for this difference in body shape?
A) Looking like their food sources allows the caterpillars to move through their environment
more efficiently.
B) Development into the adult moth form is faster for caterpillars shaped like twigs than like
flowers.
C) Looking like their food source lets the caterpillars blend into their surroundings, reducing
predation.
D) Looking like their food source will increase the caterpillars' feeding efficiency; this would
increase their growth rate and survival rate.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3

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23) How does a scientific theory differ from a scientific hypothesis?
A) Theories are proposed to test scientific hypotheses.
B) Theories are usually an explanation for a more general phenomenon; hypotheses typically
address more specific issues.
C) Hypotheses are usually an explanation for a more general phenomenon; theories typically
address more specific issues.
D) Confirmed theories become scientific laws; hypotheses become theories.
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3
24) A friend of yours calls to say that his car would not start this morning. He asks for your help.
You say that you think the battery must be dead. If so, then jump-starting the car from a good
battery will solve the problem. In doing so, you are _____.
A) testing a theory for why the car will not start
B) making observations to inspire a theory for why the car will not start
C) stating a hypothesis and using that hypothesis to make a testable prediction
D) comparing multiple hypotheses for why the car will not start
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3
25) Agrobacterium infects plants and causes them to form tumors. You are asked to determine
how long a plant must be exposed to these bacteria to become infected. Which of the following
experiments will provide the best data to address that question?
A) Determine the survival rate of Agrobacterium when exposed to different concentrations of an
antibiotic.
B) Measure the number of tumors formed on a plant when exposed to various concentrations of
Agrobacterium.
C) Measure the concentration of Agrobacterium in different soil environments where the plants
grow.
D) Measure the number of tumors formed on plants, which are exposed to Agrobacterium for
different lengths of time.
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 1.3

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26) Agrobacterium infects plants and causes them to form tumors. You determine that tumor
formation requires a large amount of the plant's energy for tissue formation. How might this
change the number of offspring a plant produces, and what is the most likely explanation for this
change?
A) The number of offspring should increase, because in general, illness increases the
reproductive output of organisms.
B) The number of offspring should increase, because the bacteria will provide energy for the
plant.
C) The number of offspring should decrease, because the plant will divert energy from
reproduction to tumor formation.
D) There should be no effect of infection on offspring production because energy for
reproduction is independent of infection.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3
Use the following information when answering the corresponding question(s).
In 1668, Francesco Redi performed a series of experiments on spontaneous generation. He began
by putting similar pieces of meat into eight identical jars. Four jars were left open to the air, and
four were sealed. He then did the same experiment with one variation: Instead of sealing four of
the jars completely, he covered them with gauze (the gauze excluded the flies while allowing the
meat to be exposed to air). In both experiments, he monitored the jars and recorded whether or
not maggots (young flies) appeared in the meat.
27) Refer to the paragraph on Redi's experiments. What hypothesis was being tested in the initial
experiment with open versus sealed jars?
A) Spontaneous generation is more likely during the long days of summer.
B) The type of meat used affects the likelihood of spontaneous generation.
C) Maggots do not arise spontaneously, but from eggs laid by adult flies.
D) Spontaneous generation can occur only if meat is exposed to air.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 1.3
28) Refer to the paragraph on Redi's experiments. In both experiments, flies appeared in all of
the open jars and only in the open jars. Which one of the following statements is correct?
A) The experiment was inconclusive because Redi used only one kind of meat.
B) The experiment was inconclusive because it did not run long enough.
C) The experiment supports the hypothesis that spontaneous generation occurs in rotting meat.
D) The experiment supports the hypothesis that maggots arise only from eggs laid by adult flies.
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 1.3

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29) The best experimental design _____.
A) includes a large sample size for each condition
B) includes a control
C) alters only one condition between the controls and the experimental condition
D) includes a large sample size and a control, and alters only one condition between the controls
and the experimental condition
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3
30) In the process of science, which of these is tested?
A) a result
B) an observation
C) a hypothesis
D) a control group
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3
31) A controlled experiment _____.
A) is repeated many times to ensure that the results are accurate
B) includes at least two groups, one of which does not receive the experimental treatment
C) includes at least two groups, one differing from the other by two or more variables
D) includes one group for which the scientist controls all variables
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3
32) Which of the following are qualities of any good scientific hypothesis?
I. It is testable.
II. It is falsifiable.
III. It produces quantitative data.
IV. It produces results that can be replicated.
A) I only
B) III only
C) I and II
D) III and IV
Answer: C
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3

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33) In presenting data that result from an experiment, a group of students show that most of their
measurements fall on a straight diagonal line on their graph. However, two of their data points
are "outliers" and fall far to one side of the expected relationship. What should they do?
A) Do not show these points because clearly something went wrong in the experiment.
B) Average several trials, rule out the improbable results, and do not show them in the final
work.
C) Show all results obtained and then try to explore the reason(s) for these outliers.
D) Change the details of the experiment until they can obtain the expected results.
Answer: C
Bloom's Taxonomy: Synthesis/Evaluation
Section: 1.3
34) Which of the following is the best description of a control for an experiment?
A) The control group is kept in an unchanging environment.
B) The control group is matched with the experimental group except for one experimental
variable.
C) The control group is exposed to only one variable rather than several.
D) Only the experimental group is tested or measured.
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.3
35) Which of these is an example of inductive reasoning?
A) Hundreds of individuals of a species have been observed and all are photosynthetic; therefore,
the species is photosynthetic.
B) These organisms live in sunny regions. Therefore, they are using photosynthesis.
C) If protists are all single-celled, then they are incapable of aggregating.
D) If two species are members of the same genus, they are more alike than each of them could be
to a different genus.
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 1.3
36) The application of scientific knowledge for some specific purpose is known as _____.
A) technology
B) deductive science
C) inductive science
D) pure science
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.4

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37) Which of the following best describes a model organism?
A) It is often pictured in textbooks and easy for students to imagine.
B) It is well studied, it is easy to grow, and results are widely applicable.
C) It is small, inexpensive to raise, and lives a long time.
D) It has been chosen for study by early biologists.
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 1.4
38) Why is a scientific topic best discussed by people of varying points of view, from different
subdisciplines, and representing diverse cultures?
A) Robust and critical discussion between diverse groups improves scientific thinking.
B) Scientists can coordinate with others to conduct experiments in similar ways.
C) This is a way of ensuring that everyone gets the same results.
D) People need to exchange their ideas with other disciplines and cultures because everyone has
a right to an opinion in science.
Answer: A
Bloom's Taxonomy: Synthesis/Evaluation
Section: 1.4

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Campbell Biology, 10e (Reece)
Chapter 2 The Chemical Context of Life
1) About twenty-five of the ninety-two natural elements are known to be essential to life. Which
four of these twenty-five elements make up approximately 96 percent of living matter?
A) carbon, sodium, hydrogen, nitrogen
B) carbon, oxygen, phosphorus, hydrogen
C) oxygen, hydrogen, calcium, nitrogen
D) carbon, hydrogen, nitrogen, oxygen
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.1
2) Trace elements are those required by an organism in only minute quantities. Which of the
following is a trace element that is required by humans and other vertebrates, but not by other
organisms such as bacteria or plants?
A) calcium
B) iodine
C) sodium
D) phosphorus
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.1
3) Which of the following statements is FALSE?
A) Carbon, hydrogen, oxygen, and nitrogen are the most abundant elements of living matter.
B) Some naturally occurring elements are toxic to organisms.
C) All life requires the same essential elements.
D) Iron is needed by all humans.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 2.1
4) Which of the following are compounds?
A) H2O, O2, and CH4
B) H2O and O2
C) O2 and CH4
D) H2O and CH4, but not O2
Answer: D
Bloom's Taxonomy: Application/Analysis
Section: 2.1

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2
5) Knowing the atomic mass of an element allows inferences about which of the following?
A) the number of electrons in the element
B) the number of protons in the element
C) the number of protons plus neutrons in the element
D) the number of protons plus electrons in the element
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 2.2
6) In what way are elements in the same column of the periodic table the same? They have the
same number of _____.
A) protons
B) electrons when neutral
C) electrons in their valence shells when neutral
D) electron shells when neutral
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 2.2
7) Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers
from 92-100. Therefore, which of the following can be true?
A) Molybdenum atoms can have between 50 and 58 neutrons.
B) Molybdenum atoms can have between 50 and 58 protons.
C) Molybdenum atoms can have between 50 and 58 electrons.
D) Isotopes of molybdenum have different numbers of electrons.
Answer: A
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.2
8) Carbon-12 is the most common isotope of carbon and has a mass number of 12. However, the
average atomic mass of carbon found on a periodic table is slightly more than 12 daltons. Why?
A) The atomic mass does not include the mass of electrons.
B) Some carbon atoms in nature have an extra proton.
C) Some carbon atoms in nature have more neutrons.
D) Some carbon atoms in nature have a different valence electron distribution.
Answer: C
Bloom's Taxonomy: Application/Analysis
Section: 2.2

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3
9) Which of the following best describes the relationship between the atoms described below?
A) They are isomers.
B) They are isotopes.
C) They contain 1 and 3 protons, respectively.
D) They each contain only 1 neutron.
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.2
10) The atomic number of nitrogen is 7. Nitrogen-15 has a greater mass number than nitrogen-14
because the atomic nucleus of nitrogen-15 contains _____.
A) 7 neutrons
B) 8 neutrons
C) 8 protons
D) 15 protons
Answer: B
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.2
11) From its atomic number of 15, it is possible to predict that the phosphorus atom has _____.
A) 5 neutrons, 5 protons, and 5 electrons
B) 15 neutrons and 15 protons
C) 8 electrons in its outermost electron shell
D) 15 protons and 15 electrons
Answer: D
Bloom's Taxonomy: Knowledge/Comprehension
Section: 2.2
12) Fluorine has an atomic number of 9. Which of the following would you do to a neutral
fluorine atom to complete its valence shell?
A) add 1 electron
B) add 2 electrons
C) remove 1 electron
D) Nothing. If fluorine is neutral, it has a complete valance shell.
Answer: A
Bloom's Taxonomy: Application/Analysis
Section: 2.2

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