Chapter 8 Questions

Chapter 8 Questions - Ch 8 Multiple Choice Identify the...

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Ch 8 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following describe(s) some aspect of metabolism? a. synthesis of macromolecules b. breakdown of macromolecules c. control of enzyme activity d. A and B only e. A, B, and C ____ 2. Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a. catalysis b. metabolism c. anabolism d. dehydration e. catabolism ____ 3. Which of the following statements correctly describe(s) catabolic pathways? a. They do not depend on enzymes. b. They consume energy to build up polymers from monomers. c. They release energy as they degrade polymers to monomers. d. They lead to the synthesis of catabolic compounds. e. both A and B ____ 4. Which of the following is (are) true for anabolic pathways? a. They do not depend on enzymes. b. They are highly regulated sequences of chemical reactions. c. They consume energy to build up polymers from monomers. d. They release energy as they degrade polymers to monomers. e. both B and C ____ 5. Which of the following is a statement 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. Kinetic energy is stored energy that results from the specific arrangement of matter. e. Energy cannot be transferred or transformed. ____ 6. The first law of thermodynamics states that energy can be neither created nor destroyed. For living organisms, which of the following is an important consequence of the first law? a. The energy content of an organism is constant. b. The organism ultimately must obtain all of the necessary energy for life from its environment. c. The entropy of an organism decreases with time as the organism grows in complexity. d. Organisms are unable to transform energy. e. Life does not obey the first law of thermodynamics. ____ 7. According to the first law of thermodynamics, a. the universe loses energy because of heat production. b. systems rich in energy are intrinsically unstable and will give up energy with time. c. energy can be neither created nor destroyed. d. A and B only e. A, B, and C
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____ 8. Living organisms increase in complexity as they grow, resulting in a decrease in the entropy of an organism. How does this relate to the second law of thermodynamics? a. Living organisms do not obey the second law of thermodynamics, which states that entropy must increase with time. b. Life obeys the second law of thermodynamics because the decrease in entropy as the organism grows is balanced by an increase in the entropy of the universe. c.
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Chapter 8 Questions - Ch 8 Multiple Choice Identify the...

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