Biology - Chapters 6-11

36 Questions  I  By Heathre on November 2, 2008
These are all of the questions from our tests on chapters 6-11. Enjoy.

  

Question Excerpt

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1.  Which of the following describe(s) some aspect of metabolism?
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2.  Which term most precisely describes the cellular process of breaking down larege molecules into smaller ones?
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3.  Which of the following statements correctly describe(s) catabolic pathways?
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4.  Which of the following is (are) true for anabolic pathways?
5.  Which of the following is a statement of the first law of thermodynamics?
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6.  Whenever energy is transformed, there is always an increase in the
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7.  Which of the following forms of energy is least available to accomplish cellular work?
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8.  What is the change in free energy of a system at chemical equilibrium?
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9.  A chemical reaction that has a positive ΔG is correctly described as
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10.  ATP generally energizes a cellular process by
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11.  What term is used to describe the transfer of free energy from catabolic pathways to anabolic pathways?
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12.  Which of the following statements is (are) true about enzyme-catalyzed reactions?
13.  How can one increase the rate of a chemical reaction?
14.  Sucrose is a disaccharide, composed of the monosaccharides glucose and fructose. The hydrolosys of sucrose by the enzyme sucrase results in
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15.  Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's
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16.  Which of the following statements regarding enzymes is true?
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17.  An enzyme catalyzes a reaction by
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18.  During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a ΔG of -20kcal/mol. If you double the amount of enzyme in the reaction, what will be the ΔG for the new reaction?
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19.  The active site of an enzyme is the region that
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20.  Many different things can alter enzyme activity. Which of the following underlie all types of enzyme regulation?
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21.  Which curve represents the behavior of an enzyme taken from a bacterium that lives in hot springs at temperatures of 70˚C or higher?
22.  Which curve was most likely generated from analysis of an enzyme from a human stomach where conditions are strongly acid?
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23.  Which curve was most likely generated from an enzyme that requires a cofactor?
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24.  Increasing the substrate concentration in an enzymatic reaction could overcome which of the following?
25.  What is a nonprotein "helper" of an enzyme molecule called?
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26.  Zinc, an essential trace element for most organisms, is present in the active site of the enzyme carboxypeptidase. The zinc most likely functions as a(n)
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27.  Which of the following terms best describes the reaction?
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28.  Which of the following would be the same in an enzyme-catalyzed or noncatalyzed reaction?
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29.  A series of enzymes catalyze the reaction X→Y→Z→A Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme.What is substance X?
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30.  A series of enzymes catalyze the reaction X→Y→Z→A Product A binds to the enzyme that converts X to Y at a position remote from its active site. This binding decreases the activity of the enzyme. Substance A functions as
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31.  If an enzyme is added to a solution where its substrates and products are in equilibrium, what would occur?
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32.  Some bacteria are metabolically active in hot springs because
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33.  In your body, what process converts the chemical energy found in glucose into the chemical energy found in ATP?
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34.  What limits the resolving power of a light microscope?
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35.  When biologists wish to study the internal ultrastructure of cells, they most likely would use
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36.  The advantage of light microscopy over electron microscopy is that
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