2009%20Exam%203 - BIOLOGY 311C Brand Spring 2009...

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BIOLOGY 311C - Brand Spring 2009 NAME (printed very legibly) _________________________________________ UT-EID ________________ EXAMINATION 3 Before beginning, check to be sure that this exam contains 7 pages (including front and back) numbered consecutively, and that you have been provided with a clean Answer Sheet. Then immediately print your name and UT-EID legibly at the top of this page. Also print and bubble in your name and your UT-EID (not your social security number) on the front of the Answer Sheet in the spaces provided. The first 37 questions are “multiple choice”, with only one correct answer. Mark the letter corresponding to the correct answer to each of these questions in the appropriate location on the Answer Sheet, using a No. 2 pencil. Write answers to Questions 38 – 41 directly on this exam, in the spaces provided with the questions. Print neatly if your handwriting is likely to be difficult to read. Turn in both this exam and the Answer Sheet after checking to be sure that your name is written clearly on both, and that all questions have been answered in the appropriate locations. You must turn in your exam on or before 9:55 a.m. 1. Which one of the following would you expect to go in the reverse direction under standard conditions? a. The hydrolysis of ATP to ADP + P i b. The hydrolysis of ATP to A + inorganic triphosphate c. The dehydration of glucose + P i to glucose-6-phosphate d. The de-protonation of a carboxylic acid at pH 9 2. How many “high energy” phosphate bonds occur in the nucleotide dCDP? a. 0 b. 1 c. 2 d. 3 3. Enzymes speed up the rates of chemical reactions by: a. lowering their energy of activation. b. increasing their energy of activation. c. decreasing their Δ G° value. d. increasing their Δ G° value. 4. An apoenzyme is a(n): a. enzyme that consists of less than 20 amino acids. b. surface to which an enzyme binds. c. substrate that also acts as an inhibitor of the enzyme. d. polypeptide component of a conjugated protein. 5. A typical enzyme is expected to: a. function rapidly over a narrow range of temperatures. b. function rapidly over a broad range of pH values. c. contain an adaptable binding site so it can react with many different kinds of substrate. d. be a fibrous protein. Spring 2009 Exam 3 p. 1 BIO 311c Brand
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6. The reaction shown at right is a(n): a. protonation. b. deprotonation. c. oxidation. d. reduction. 7. The primary function of FAD in living cells is to: a. carry hydrogen atoms. b. store metabolic energy. c. catalyze hydrolysis reactions. d. serve as a solar energy collector. 8. Which one of the following is not true of anabolic pathways? a.
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2009%20Exam%203 - BIOLOGY 311C Brand Spring 2009...

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