Biology 1710 Exam IIa F'03

Biology 1710 Exam IIa F'03 - Name:_ Exam II, Fall `03...

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Name:_____________________________ Exam II, Fall ‘03 Remember to read all of the possible answers for each question before choosing the BEST ANSWER. 1. An organism converts radiant energy into chemical energy and requires no complex organic molecules in its diet. This is an example of a/an: a. catabolite. b. endergonic organism. c. autotroph. d. heterotroph. e. None of the above are correct answers. 2. During the metabolic process of breaking down glucose to carbon dioxide and water (to make ATP), the portion of the process which is not considered/classified as part of aerobic respiration is: a. glycolysis. b. pyruvate oxidation. c. Kreb’s cycle. d. the electron transport chain. e. All of the above are considered aerobic respiration. 3. The oxidation of pyruvate by pyruvate decarboxylase at the step following glycolysis does not yield: a. acetylCoA b. NADH c. CO2 d. substrate level phosphorylation (direct production at this time) of ATP e. All of the above are products of this reaction. 4. The metabolic pathway we refer to as glycolysis is found in: a. bacteria. b. plants. c. animals d. only eukaryotes. e. all living organisms. 5. A reaction requires energy input in order to occur (products have more free energy than reactants). This reaction is best described as: a. anabolic. b. catabolic. c. exergonic. d. endergonic. e. entropic.
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Stored energy which is due to an object’s relative position is an example of: a. kinetic energy. b. entropy. c. enthalpy d. potential energy. e. thermodynamic energy. 7. When an atom or molecule is oxidized it: a. loses electrons. b. gains electrons. c. changes its atomic number. d. loses protons. e. gains protons. 8. Disorder in the universe is called ________ in the context of thermodynamics. a. Kinetic energy b. Enthalpy c. Entropy d. Free energy e. Allosterism 9. The energy required to destabilize existing chemical bonds and initiate a chemical reactions is referred to as the: a. free energy. b. endergonic energy. c. potential energy. d. activation energy. e. enthalpy. 10. When a reaction catalyzed by an enzyme is compared to the same reaction occurring without an enzyme, the: a. energy of the products has been reduced. b. energy of the reactants has been reduced. c. the change in free energy has been decreased. d. the change in free energy has been increased. e. the activation energy has been reduced. 11. An inhibitor of an enzyme which binds to the enzyme’s active site would BEST be described as: a. an allosteric inhibitor. b.
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Biology 1710 Exam IIa F'03 - Name:_ Exam II, Fall `03...

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