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2004exam2Key - BCOR 011 Exam 2 2004 Name Section MULTIPLE...

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BCOR 011 Exam 2, 2004 Name:_________________ Section: _______________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. According to the first law of thermodynamics, A. the universe loses energy because of friction. B. matter can be neither created nor destroyed. C. energy is neither created nor destroyed. D. all processes increase the entropy of the universe. E. systems rich in energy are intrinsically unstable. 2. Whenever energy is transformed, there is always an increase in the A. entropy of the system. B. enthalpy of the universe. C. entropy of the universe. D. free energy of the universe. E. free energy of the system. 3. Which of the following is the most randomized form of energy? 4. Why is ATP an important molecule in metabolism? 5. How can one increase the rate of a chemical reaction? 6. A solution of starch at room temperature does not decompose rapidly to a sugar solution because A. the activation energy barrier cannot be surmounted in most of the starch molecules. B. the hydrolysis of starch to sugar is endergonic. C. the starch solution has less free energy than the sugar solution. D. starch hydrolysis is nonspontaneous. E. starch cannot be hydrolyzed in the presence of so much water.
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7. All of the following are true of enzymes except 8. How does an enzyme catalyze a reaction?
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