Exam_2 - BIOLOGY 311C - Brand Spring 2007 KEY NAME (printed...

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Spring 2007 Exam 2 p. 1 BIO 311C Brand BIOLOGY 311C - Brand Spring 2007 KEY 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 32 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 33 – 38 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 9:50 a.m. 1. Which one of the following features of water does not contribute to its polarity? a. Its bond angle makes it an asymmetrical molecule. b. Its oxygen atom is much more electronegative than its hydrogen atoms. c. Its 3-dimensional shape makes it a hydrophobic molecule. d. Two lone pairs of electrons on the oxygen project away from the hydrogen atoms. 2. Which one of the following would not be expected to bond with an aldehyde functional group through a hydrogen bond? a. An amine functional group b. A sulfhydryl functional group c. Water d. A disaccharide 3. Which of the following would not be expected to ionize in living cells? a. An alcohol functional group b. A carboxylic acid functional group c. A phosphoric acid functional group d. An amine functional group 4. Which one of the following cell compartments is best at utilizing carboxylic acid functional groups as a pH buffer? a. Mitochondrial matrix b. Cytoplasmic matrix c. Peroxysome d. Lysosome 5. At pH 7 in cells, a carboxylic acid functional group may form an electrovalent bond with which one of the following? a. A phosphoric acid functional group b. An amino acid c. A hydrocarbon d. A triglyceride
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Spring 2007 Exam 2 p. 2 BIO 311C Brand 6. What percent of a typical animal cell is water? a.
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Exam_2 - BIOLOGY 311C - Brand Spring 2007 KEY NAME (printed...

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