AP Biology Practice Exam 2 ❮ 291For questions 21–22, please use the preceding diagram:
21.If inhibitor 1 is able to bind to the active site and
block the attachment of the substrate to the
enzyme, this is an example of
A. noncompetitive inhibition.
B. competitive inhibition.
C. a cofactor.
D. a coenzyme.
22.Which of the following is nota change that would
affect the efficiency of the enzyme shown above?
A. Change in temperature
B. Change in pH
C. Change in salinity
D. Increase in the concentration of the enzyme
EnzymeA
Substrate Inhibitor #2Active site Inhibitor #1A CEnergy BDTime24.Those being hunted adopt a coloring scheme
that allows them to blend in to the colors of the
environment.
25.An animal that is harmless copies the appearance
of an animal that is dangerous as a defense mech-
anism to make predators think twice about
attacking.
26.Warning coloration adopted by animals that pos-
sess a chemical defense mechanism.
27.Some animals have patterns that can cause a
predator to think twice before attacking.
Questions 28–31 refer to the following choices:
A. Enhancer
B. Repressor
C. Operator
D. Promoter
28.Short sequence by promoter that assists transcrip-
tion by interacting with regulatory proteins.
29.Protein that prevents the binding of RNA poly-
merase to the promoter site.
30.Transcription-affecting DNA region that may be
located thousands of basepairs away from the
promoter.
31.Basepair sequence that signals the start site for
gene transcription.
Questions 32–35 refer to the following choices:
A. Divergent evolution
B. Convergent evolution
C. Parallel evolution
D. Coevolution
32.Two unrelated species evolve in a way that makes
them more similar.
33.Similar evolutionary changes occurring in two
species that can be related or unrelated.
34.The tandem back-and-forth evolution of closely
related species, which is exemplified by predator-
prey relationships.
35.Two related species evolve in a way that makes
them less similar.23.Which of the following points on the preceding
energy chart represents the activation energy of
the reaction involving the enzyme?
A. A
B. B
C. C
D. D
For questions 24–27, please use the following answers:
A. Aposomatic coloration
B. Batesian mimicry
C. Deceptive markings
D. Cryptic colorationhttp://www.ebook3000.com