Ch06_Test_File - Chapter 6: Energy, Enzymes, and Metabolism...

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Unformatted text preview: Chapter 6: Energy, Enzymes, and Metabolism TEST FILE QUESTIONS Multiple Choice 1. The sum total of all the chemical reactions in a living structure is called its a. energetics. b. activity. c. digestive power. d. entropy. e. metabolism. Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 119 2. Water held back by a dam represents what kind of energy? a. Hydroelectric b. Irrigation c. Potential d. Kinetic e. At times, all of the above Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 119 3. Which of the following represents potential energy? a. Chemical bonds b. Concentration gradient c. Electric charge imbalance d. Both a and b e. All of the above Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 119 4. What can never be created or destroyed? a. Entropy b. Energy c. Free energy only d. Thermal energy only e. Potential energy only Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 120 5. During photosynthesis, plants use light energy to synthesize glucose from carbon dioxide. However, plants do not use up energy during photosynthesis; they merely convert it from light energy to chemical energy. This process is an illustration of a. increasing entropy. b. chemical equilibrium. c. the first law of thermodynamics. d. the second law of thermodynamics. e. a spontaneous reaction. Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 120 6. The first law of thermodynamics states that the total energy in the universe is a. decreasing. b. increasing. c. constant. d. being converted to free energy. e. being converted to matter. Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 120 7. In any system, the total energy includes usable and unusable energy. The unusable energy is a measure of the disorder of the system and is referred to as a. free energy. b. entropy. c. enthalpy. d. thermodynamics. e. equilibrium. Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 120 8. A change in free energy is related to a change in a. temperature. b. entropy. c. pressure. d. Both a and b e. All of the above Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 121 9. If G of a chemical reaction is negative and the change in entropy is positive, you can conclude that the reaction a. requires energy. b. is endergonic. c. is exergonic. d. will not reach equilibrium. e. decreases the disorder in the system. Textbook Reference: 6.1 What Physical Principles Underlie Biological Energy Transformations? p. 122 10. The standard free energy change for the hydrolysis of ATP to ADP + P i is 7.3 kcal/mol. From this information one can conclude that a. the reaction will never reach equilibrium....
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Ch06_Test_File - Chapter 6: Energy, Enzymes, and Metabolism...

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