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Practice Test 2Section I (Multiple-Choice Questions)
Time: 80 minutes
100 questions
Directions: Each of the following questions or statements is followed by five possible answers or sentence completions.
Choose the one best answer or sentence completion.
1. In which of the following are the nuclear activities 4. A rare genetic defect is characterized by mucus
most opposite? accumulation in the respiratory passages and
immotile, but flagellated sperm. A defect in which
A. prophase and metaphase
of the following molecules could be responsible?
B. prophase and anaphase
C. prophase and telophase A. actin
D. metaphase and anaphase B. myosin
E. metaphase and telophase C. dynein
D. hemoglobin
2. A severe storm forms a new river that divides a E. interferon
population of mice. After 500 years, a drought
causes the river to dry up, allowing the two 5. A bacteriophage is a
populations of mice to mix. Mating between mice
A. virus that attacks bacteria
from the two populations does not yield any
B. bacterium that attacks viruses
offspring. This is an example of
C. bacterium that attacks eukaryotic cells
A. hybridization D. parasitic bacterium
B. adaptive radiation E. parasitic eukaryotic cell
C. balanced polymorphism
D. allopatric speciation 6. All of the following are end products of the light-
E. sympatric speciation dependent reactions of photosynthesis EXCEPT:
A. O2
3. DNA replication requires all of the following
B. H+
EXCEPT:
C. C6H12O6
A. primase D. ATP
B. helicase E. NADPH
C. DNA polymerase
D. topoisomerase 7. A dominant trait appears in 19% of the individuals
E. small nuclear ribonucleoproteins (snRNPs) in a population that is in Hardy-Weinberg
equilibrium. What percent of the population in
the next generation is expected to be homozygous
dominant?
A. 1%
B. 9%
C. 18%
D. 19%
E. 81%
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323
,Part III: AP Biology Practice Tests
8. Elongation of cells in shoot tips of plants is 13. Both menopause and menstrual flow are preceded
promoted by by which of the following?
A. abscisic acid A. a decrease in estrogen production
B. carotene B. an increase in estrogen production
C. cytokinin C. an increase in testosterone production
D. ethylene D. the degeneration of the uterus
E. auxin E. the degeneration of the pituitary gland
9. The endosymbiotic theory for the origin of 14. A transcription of the DNA sequence
eukaryotes is supported by all of the following CCCGGAATT would produce which of the
EXCEPT: following sequences in mRNA?
A. Mitochondria and chloroplasts have double A. CCCGGAATT
membranes that consist of two lipid bilayers B. GGGCCTTAA
separated by an intermembrane space. C. AAATTCCGG
B. Mitochondria and chloroplasts both D. UUUAACCAA
generate ATP. E. GGGCCUUAA
C. Mitochondria and chloroplasts have a single,
circular DNA molecule without histones. 15. Cells of most Archaea have all of the following
D. Mitochondria and chloroplasts have characteristics EXCEPT:
ribosomes that more closely resemble those
of bacteria than of eukaryotes. A. circular chromosomes
E. Mitochondria and chloroplasts divide by a B. histones associated with the DNA
process that resembles binary fission. C. peptidoglycans in the cell walls
D. introns
10. Which of the following transmits nerve impulses E. plasmids
between neurons?
16. A cell contains four pairs of homologous
A. Cholinesterase
chromosomes represented by A1 /A2 B1 /B2 C1 /C2
B. Acetylcholine
D1 /D2. Which of the following represents the
C. K+
chromosome makeup of a gamete derived from
D. Ca2+ this cell?
E. Synaptonemal complex
A. A1A2B1B2C1C2D1D2
B. B1B1C1D1
11. The frequency of individuals better able to survive
in a new habitat increases in a population over C. A1A2B1B2
time. The best explanation for this is D. A1B2C2D2
E. A1C1C2D1
A. mutation
B. natural selection
17. Aphids are insects that insert their needlelike
C. genetic drift mouthparts into plants. Sometimes, fluid from the
D. gene flow plant tissues passes entirely through the digestive
E. the founder effect tract of the aphid and emerges as a small droplet
at its posterior end. The source of this liquid is
12. A woman with type A blood requires a blood probably
transfusion. With respect to this trait, all of the
A. epidermal cells
following individuals would have a blood type
B. phloem cells
with a safe match for this transfusion EXCEPT:
C. tracheids
A. an individual with the genotype IAIA D. vessels
B. an individual with the genotype IAi E. xylem cells
C. an individual with the genotype ii
D. an individual with the genotype IAIB
E. an individual with type O blood
324
, Practice Test 2
18. All of the following are associated with an 23. Harlequin ichthyosis is a genetic disease
increase in the rate of breathing EXCEPT: characterized by thickened skin that easily peels
off and cracks where it would normally fold.
A. an increase in HCO3– in the blood
Which of the following systems is most
B. an increase in pH in the blood compromised by this disease?
C. an increase in CO2 in the blood
D. moving to a higher elevation A. immune system
E. an increase in muscular activity B. excretory system
C. digestive system
19. An amino acid is related to a protein in the same D. circulatory system
way as E. endocrine system
A. glycerol is related to a saturated fat
24. Certain cells of embryonic origin develop outside
B. glycerol is related to cholesterol the embryo. These cells contribute entirely or in
C. glucose is related to a polypeptide part to all of the following structures EXCEPT the:
D. glucose is related to sugar
E. glucose is related to starch A. yolk sac
B. chorion
C. amnion
20. Which of the following organisms would most
likely be located at the bottom of a pyramid of D. placenta
biomass? E. endometrium
A. diatoms
25. During DNA replication, enzymes break the
B. squid
Practice Test 2
hydrogen bonds between the nucleotide base pairs
C. crustaceans to unwind the double-helix DNA molecule. What
D. seals prevents the hydrogen bonds from reforming?
E. sharks
A. helicases
B. ribozymes
21. All of the following are influential in animal
C. histones
development EXCEPT:
D. single-strand binding proteins
A. ced-3 gene E. small nuclear ribonucleoproteins (snRNPs)
B. lacA gene
C. homeotic genes 26. Clown fish hide among the tentacles of sea
D. homeobox anemones. Unlike their predators, clown fish are
E. Hox genes immune to the stinging tentacles. Thus, clown fish
are protected within the sea anemones. Sometimes,
22. Pine leaves (needles) have a thick cuticle, stomata the clown fish will provide scraps of food to the sea
that are sunken below the surface, and an anemones, and at other times, the clown fish will
endodermis with Casparian strips. These features eat some of a fish that is snared by the sea
suggest leaf adaptation to anemones. The relationship between the clown
fish and the sea anemone is an example of
A. cold habitats
B. dry habitats A. competition
C. wet habitats B. commensalism
D. insect predation C. mutualism
E. ultraviolet light exposure D. parasitism
E. predation
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325
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