True/False
Indicate whether the
statement is true or false.
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1.
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Ion channels are usually able to transport only one type of ion.
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2.
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Animals that live exclusively on a diet of other animals are unable to use
carbohydrates to fuel their life processes.
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3.
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Carbon dioxide and water, in the presence of sunlight, will react to form sugars
and oxygen gas.
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4.
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Despite years of research, the actual structure of the DNA molecule is still
unknown.
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The partial pedigree below is for a family with a genetic
disorder. 
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5.
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Refer to the illustration above. The father listed in the pedigree is most
likely heterozygous for the trait.
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6.
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In endosymbiosis, one organism lives inside of another organism in a
relationship that benefits one organism but harms the other organism.
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7.
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The human population began to increase dramatically in 500 AD.
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8.
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When succession takes place where there has been previous growth, it is called
secondary succession.
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9.
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The critical resource required for plant growth that is usually absent in newly
formed habitats is water.
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10.
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Algae are seedless plantlike organisms, and all true plants produce
seeds.
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11.
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The outer protective layer of tissue on a vascular plant is known as the
meristem.
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12.
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Mollusks and annelids are believed to be the first animals to develop a true
coelom.
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13.
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Birds, reptiles, and mammals minimize water loss by means of their watertight
skins.
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14.
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The three basic types of muscle are skeletal muscle, smooth muscle, and cardiac
muscle.
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15.
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Extensor muscles cause bones to bend at a joint, while flexors cause them to
straighten.
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16.
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The body possesses millions of different types of T cells, each of which bears
unique receptor molecules that can recognize millions of different foreign proteins.
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17.
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The liver is part of the digestive system.
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18.
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Nitrogenous waste is removed from the blood by a process called
filtration.
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19.
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Hormones travel throughout the body in the bloodstream and can affect any
cell.
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20.
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The fallopian tubes are the organs responsible for producing eggs.
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Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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21.
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heavy rains : flooding ::
a. | osmosis : proton pumping | b. | high solute concentration : isotonic
solution | c. | active transport : ATP | d. | concentration difference :
osmosis |
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22.
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Based on the cycle of photosynthesis and cellular respiration, one can say that
the ultimate original source of energy for all living things on Earth is
a. | carbohydrates. | c. | the sun. | b. | water. | d. | carbon dioxide. |
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23.
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Where on the lac operon does a repressor molecule bind when lactose is
absent?
a. | to the operator | c. | to a structural gene | b. | to the promoter | d. | to the
regulator |
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24.
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The finches that Darwin studied differed in the shape of their beaks. According
to Darwin, the finches probably
a. | all had a common ancestor. | b. | had been created by design that
way. | c. | were descended from similar birds in Africa. | d. | ate the same
diet. |
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25.
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Evidence for evolution includes all of the following except
a. | acquired characteristics. | b. | similarities and differences in proteins and
DNA sequences between organisms. | c. | the fossil record. | d. | homologous
structures. |
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26.
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Which of the following types of characteristics is used in systematic taxonomy
to organize organisms?
a. | patterns of embryological development | b. | morphology | c. | amino acid sequences
of proteins | d. | All of the above |
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27.
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Refer to the illustration above. At each trophic level, the energy stored in the
organisms in that level is
a. | about one-tenth of the energy in the level below it. | b. | about one-tenth of
the energy in the level above it. | c. | 50 percent of the energy in the level below
it. | d. | 100 percent of the energy in the level below it. |
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28.
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Which of the following is not a viral disease of humans?
a. | hepatitis | b. | rabies | c. | shingles | d. | All of the above are viral diseases of
humans. |
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29.
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The only mollusks that have a closed circulatory system are
a. | bivalves. | c. | chitons. | b. | cephalopods. | d. | gastropods. |
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30.
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Refer to the illustration above. Movement of this organism is dependent upon the
structure labeled
a. | “1.” | c. | “3.” | b. | “2.” | d. | None of the
above |
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31.
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Molting in arthropods occurs in response to
a. | enzyme action. | c. | pressure. | b. | hormonal action. | d. | All of the
above |
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32.
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Which of the following is not a food source for sea stars?
a. | clams | c. | oysters | b. | cnidarians | d. | sponges |
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33.
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Refer to the illustration above. In which of the following organisms might you
expect to find the structure illustrated in the diagram?
a. | frog | c. | bird | b. | spider | d. | goldfish |
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34.
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The word amphibian is derived from Greek words meaning
a. | “fishlike.” | c. | “double
life.” | b. | “froglike.” | d. | “first lunged.” |
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35.
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A bird’s heart has
a. | one chamber. | c. | three chambers. | b. | two chambers. | d. | four chambers. |
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36.
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The first portion of the small intestine is the
a. | colon. | c. | duodenum. | b. | esophagus. | d. | rectum. |
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37.
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The body’s normal metabolic rate is regulated by
a. | thyroxine. | c. | estrogen. | b. | epinephrine. | d. | prolactin. |
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38.
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Refer to the illustration above. Eggs mature in the structure labeled
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39.
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Which of the following is not a possible risk factor associated with
smoking?
a. | cirrhosis | c. | lung cancer | b. | high blood pressure | d. | peptic ulcers |
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40.
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When an addict stops taking the drug that has caused the addiction, the body
will not function normally until
a. | the number of receptor proteins in the affected synapses has had time to
readjust. | b. | the amount of the drug being used has been reduced to a safe
level. | c. | methadone has been prescribed by a physician. | d. | All of the
above |
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