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Official Biology Clep Test - College Board (Actual) Questions and Answers
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Official Biology Clep Test - College Board (Actual) Questions and Answers
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Official Biology Clep Test - CollegeBoard (Actual) Questions and Answers
10. Thirst, loss of weight, and sugar in the urine
result from the undersecretion of a hormone by
which of the following glands?
(A) Thyroid
(B) Parathyroid
(C) Pancreas
(D) Adrenal
(E) Thymus - ANSWER-(C) Pancreas
11. Considering the role of mitochondria in cells,
mitochondria would likely be most abundant in
which of the following?
(A) Mature red blood cells
(B) Callous cells of the skin
(C) Cells of the heart muscle
(D) Epithelial cells of the cheek lining
(E) Fat cells - ANSWER-(C) Cells of the heart muscle
12. All of the following statements about enzymes
are true EXCEPT
(A) A single enzyme molecule can be used over and over again.
(B) Most enzymes are highly specific with
regard to the reactions they catalyze.
(C) Some enzymes contain an essential nonprotein component.
(D) Enzymes can function only within living cells.
(E) Most enzymes are denatured by high
temperatures. - ANSWER-(D) Enzymes can function only within living cells.
13. Which of the following is critical in limiting the
size to which an animal cell may grow?
(A) The ratio of cell surface to cell volume
(B) The abundance of mitochondria in the cytoplasm
(C) The chemical composition of the cell membrane
(D) The presence of an inelastic cell wall
(E) The relative number of nucleoli - ANSWER-(A) The ratio of cell surface to cell
volume
14. Which of the following best describes the
effect on heart action of the stimulation of the
parasympathetic nerve fibers of the vagus nerve?
,(A) There is a decrease in the volume of blood pumped and an increase in the
heartbeat rate.
(B) There is an increase in the volume of
blood pumped without a decrease in the
heartbeat rate.
(C) There is a prolonged acceleration in the
heartbeat rate.
(D) There is a decrease in the heartbeat rate.
(E) There is an increase in the blood pressure. - ANSWER-(D) There is a decrease in
the heartbeat rate.
15. If poorly drained soils encourage the growth
of bacteria that convert nitrate to nitrogen, the
effect on higher plants will be to
(A) increase lipid production
(B) decrease protein production
(C) increase carbohydrate production
(D) produce unusually large fruits
(E) stimulate chlorophyll production - ANSWER-(B) decrease protein production
16. A patient is placed on a restricted diet of water, pure cooked starch, olive oil,
adequate minerals, and vitamins. If a urinalysis several weeks later reveals the
presence of relatively normal amounts of urea, the urea probably came from the
(A) food eaten during the restricted diet
(B) withdrawal of reserve urea stored in the liver
(C) chemical combination of water, carbon
dioxide, and free nitrogen
(D) deamination of cellular proteins
(E) urea synthesized by kidney tubule cells - ANSWER-(D) deamination of cellular
proteins
17. Shown above is the absorption spectrum of a compound of biological importance. If
a person with normal human color vision viewed this compound under ordinary white
light, what color would it appear to be?
(A) Red
(B) Blue
(C) Green
(D) Black
(E) White - ANSWER-(C) Green
18. The codon for a particular amino acid is
5'CAU3'. The DNA sequence that complements
this codon is
(A) 3'CAU5'
(B) 3'GTA5'
(C) 3'GTT5'
, (D) 3'GUA5'
(E) 3'GUT5' - ANSWER-(B) 3'GTA5'
19. Viral DNA would be most likely to contain
genes that code for
(A) regulatory hormones
(B) viral-coat protein
(C) viral-ribosome proteins
(D) glycolytic enzymes
(E) restriction enzymes - ANSWER-(B) viral-coat protein
2. The greatest diversity of structure and of methods of locomotion is exhibited in the
individuals of
(A) a class
(B) a family
(C) an order
(D) a species
(E) a phylum - ANSWER-(E) a phylum
20. Which of the following statements about
imprinting is NOT true?
(A) The capacity for imprinting may be limited to a specific and brief period in the early
life of the organism.
(B) The behavior pattern associated with imprinting is the result of reward or
punishment.
(C) The behavior resulting from imprinting is difficult to reverse in later life.
(D) A gosling imprinted by a moving wooden
decoy may exhibit courting behavior to the
decoy in later life.
(E) Odors and sounds may serve as stimuli
for imprinting. - ANSWER-(B) The behavior pattern associated with imprinting is the
result of reward or punishment.
21. Which of the graphs below illustrates the effect of substrate concentration on the
initial rate of reaction when a limited amount of enzyme is present? - ANSWER-Graph
that is low on the bottom left gradually rising to the upper right corner where it settles off
22. Which of the following is the final electron
acceptor in the mitochondrial electron transport
system?
(A) ADP + Pi
(B) ATP
(C) NAD or FAD
(D) Pyruvate
(E) O2 - ANSWER-(E) O2
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