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Free CLEP Biology Practice Test Questions

College Level Examination Program (CLEP) Biology Practice Test 

Exam Questions comes under: Molecular and cellular biology, Organismal biology and Population biology
CLEP Biology Practice Test
Biology Practice Test

No.of Questions: 115 questions Duration: 90 minutes

Choose the best answer from the five options given below. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Score'. Percentage score will be displayed along with right answers
1. Which of the following statements about imprinting is not true?
The learned behavior resulting from imprinting is difficult to reverse in later life.
A gosling imprinted by a moving wooden decoy may exhibit courting behavior to the decoy in later life.
Odors and sounds may serve as stimuli for imprinting.
The behavior pattern associated with imprinting is the result of reward or punishment.
The capacity for imprinting may be limited to a specific and brief period in the early life of the organism.
2. Which of the following factors figures most significantly in limiting the size to which an animal cell may grow?
The presence of an inelastic cell wall
The chemical composition of the cell membrane
The abundance of mitochondria in the cytoplasm
The ratio of cell surface to cell volume
The relative number of nucleoli
3. In which of the following ways do social insects benefit most from having several types or castes within the species?
The secretions or odors produced by the protective caste are an effective defense.
Each colony is able to include a large number of individuals.
The specialized structure of each caste permits division of labor and greater efficiency.
The division of the species into castes ensures the survival of the fittest.
Large numbers of the worker caste can migrate to start new colonies.
4. Deposits of coal in Greenland and the Antarctic indicate that
the Earth’s crust in these regions contains vast amounts of limestone
these regions once contained numerous mollusks that deposited carbohydrates in their shells
a geologic uplift of coral rock and ocean bed has recently occurred in these regions
there is a rich store of dissolved carbon dioxide in the seas surrounding these regions
these regions were once thickly vegetated
5. If poorly drained soils encourage the growth of bacteria that convert nitrate to nitrogen, the effect on higher plants will be to
increase lipid production
increase carbohydrate production
decrease protein production
stimulate chlorophyll production
produce unusually large fruits
6. In an amphibian gastrula, transplantation experiments that involve the dorsal lip of the blastopore indicate that this tissue
is destined to be ectoderm
does not differ from other tissues of the blastula in any significant manner
will cause a concentration of yolk in adjacent cells
has the power to initiate differentiation of the embryonic neural tube
is so sensitive that it will develop into any embryonic structure, depending on its surroundings
7. Which of the following best describes the effect on heart action of the stimulation of the parasympathetic nerve fibers of the vagus nerve?
There is a decrease in the volume of blood pumped and an increase in the heartbeat rate.
There is a prolonged acceleration in the heart beat rate.
There is an increase in the volume of blood pumped without a decrease in the heartbeat rate.
There is an increase in the blood pressure.
There is a decrease in the heartbeat rate.
8. 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
food eaten during the restricted diet
deamination of cellular proteins
Withdrawal of reserve urea stored in the liver
urea synthesized by kidney tubule cells
chemical combination of water, carbon dioxide, and free nitrogen
9. Which of the following statements best explains the hypothesis that the development of sexual reproduction has resulted in acceleration of the rate of evolution?
Mutations are more likely to occur in spermatogenesis and oogenesis than in mitotically dividing cells.
Those members of a species that are best adapted to their environment are most likely to be successful in sexual reproduction.
Sexual reproduction results in more offspring than does asexual reproduction.
Sexual reproduction is more likely to result in genetic recombination than is asexual reproduction.
Mutations usually do not occur in the production of spores or in cells dividing by fission.
10. Evidence that multicellular green plants may have evolved from green algae is supplied by the fact that in both
the sporophyte generation is dominant
the gametophyte generation is dominant
male gametes are nonflagellated
xylem vessels are pitted and spiraled
chlorophylls a and b are photosynthetic pigments
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