Exam 2 - BIOLOGY 311C - Brand Spring 2008 NAME (printed...

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Unformatted text preview: BIOLOGY 311C - Brand Spring 2008 NAME (printed very legibly) _________________________________________ UT-EID ________________ EXAMINATION II 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 40 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 41 44 directly on this exam, in the spaces provided with the questions. Write in complete sentences if an explanation or a description is required. 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 clearly written in both places and all questions have been answered in the appropriate locations. You must turn in you exam on or before 9:55 a.m. 1. Structural chemistry as applied to living cells is especially concerned with: a. changes in the arrangements of atoms as they combine and dis-associate in various ways. b. the arrangements of atoms within and between biological molecules. c. the assembly of molecules into cellular structures such as membranes and occlusions. d. the chemical mechanisms whereby cells are held together to form multicellular organisms. 2. In comparison to the bond strength of typical covalent bonds, hydrogen bonds: a. are approximately 50 times as strong. b. have approximately the same bond strength. c. are approximately one-tenth as strong. d. are approximately 0.02 % as strong. 3. Active cells contain which one of the following in highest abundance? a. Water b. Organic polymers c. Small organic molecules d. Inorganic ions 4. Of the atoms whose chemical symbol is shown below, which one is most electronegative? a. C b. O c. P d. N 5. A formula of a sugar may be written as C 7 H 14 O 7 , which is a: a. structural formula. b. chemical formula. c. stereo formula. d. optical formula. Spring 2008 Exam 2 p. 1 BIO 311C Brand 6. Which one of the following functional groups would not be expected to form polar bonds with other functional groups? a. -CHO b. -OH c. -NH 2 d. -CH 3 7. Which one of the kinds of atoms whose chemical symbol is shown below does not participate in hydrogen bonds in biological molecules?...
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Exam 2 - BIOLOGY 311C - Brand Spring 2008 NAME (printed...

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