Exam Reviews For Students - Biology 1308 - Chapter 6 Sample Questions & Answers:

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Metabolism is best described as
A) control of enzyme activity.
B) synthesis of macromolecules.
C) breakdown of macromolecules.
D) A and B.
E) A, B, and C.
2) Which term most precisely describes the general process of breaking down large molecules into smaller ones?
A) catabolism B) catalysis C) anabolism D) dehydration E) metabolism
3) Which of the following is true regarding catabolic pathways?
A) They consume energy to build up polymers from monomers.
B) They do not depend on enzymes.
C) They release energy as they degrade polymers to monomers.
D) They lead to the synthesis of catabolic compounds.
E) Both A and B are correct.
4) Anabolic pathways
A) release energy as they degrade polymers to monomers.
B) do not depend on enzymes.
C) depend on enzymes.
D) consume energy to build up polymers from monomers.
E) Both B and C are correct.
5) The transfer of free energy from catabolic pathways to anabolic pathways is best called
A) entropy.
B) cooperativity.
C) bioenergetics.
D) feedback regulation.
E) energy coupling.
6) Which of the following is part of the first law of thermodynamics?
A) Energy cannot be created or destroyed.
B) The entropy of the universe is decreasing.
C) The entropy of the universe is constant.
D) Energy cannot be transferred or transformed.
E) Kinetic energy is stored energy that results from the specific arrangement of matter.
7) Of the following, the structure of ATP is most closely related to
A) an amino acid with three phosphate groups attached.
B) an anabolic steroid.
C) a double helix.
D) RNA nucleotides.
E) a phospholipid.
8) According to the first law of thermodynamics,
A) systems rich in energy are intrinsically unstable.
B) energy is neither created nor destroyed.
C) matter can be neither created nor destroyed.
D) all processes increase the entropy of the universe.
E) the universe loses energy because of friction.
9) Whenever energy is transformed, there is always an increase in the
A) enthalpy of the universe.
B) free energy of the system.
C) entropy of the universe.
D) free energy of the universe.
E) entropy of the system.
10) According to the second law of thermodynamics,
A) energy can be transferred or transformed, but it can be neither created nor destroyed.
B) the entropy of the universe is constantly increasing.
C) every energy transfer requires activation energy from the environment.
D) for every action there is an equal and opposite reaction.
E) the total amount of energy in the universe is conserved or constant.
11) All of the following statements are representative of the second law of thermodynamics except
A) systems tend to rearrange themselves toward greater entropy.
B) energy transfers are always accompanied by some loss.
C) highly organized systems require energy for their maintenance.
D) every time energy changes form, there is a decrease in entropy.
E) heat energy represents lost energy to most systems.
12) Which of the following is the most randomized form of energy?
A) chemical potential energy
B) mechanical energy
C) electrical energy
D) thermal (heat) energy
E) light energy
13) Which of the following would decrease the entropy within a system?
A) digestion
B) dehydration reactions
C) hydrolysis
D) respiration
E) catabolism
14) According to the second law of thermodynamics, all of the following statements are true except that
A) every chemical transformed represents a loss of free energy.
B) the Earth is an open system.
C) the synthesis of large molecules from small molecules is exergonic.
D) entropy increases in a closed system.
E) life exists at the expense of greater energy than it contains.
15) Evolution of biological order
A) was based on organisms as closed systems.
B) violates both the first and second law of thermodynamics.
C) can be seen in individual organisms but not in the ancestry of plant and animal kingdoms.
D) is consistent with the second law of thermodynamics.
E) Both C and D are correct.




1) Answer: E 2) Answer: A 3) Answer: C 4) Answer: E 5) Answer: E 6) Answer: A 7) Answer: D 8) Answer: B 9) Answer: C 10) Answer: B 11) Answer: D 12) Answer: D 13) Answer: B 14) Answer: C 15) Answer: D

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Exam Reviews For Students - Biology 1308 - Chapter 6 Sample Questions & Answers:
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