Key Exam 3 - BIOLOGY 311C - Brand Fall 2010 NAME (printed...

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Fall 2010 Exam 3 p. 1 BIO 311c Brand BIOLOGY 311C - Brand Fall 2010 NAME (printed very legibly) ___________________ KEY _________________ UT-EID ________________ EXAMINATION III Before beginning, check to be sure that this exam contains 8 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 45 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 46 48 directly on this exam, in the spaces provided with the questions. 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 your exam on or before 9:55 a.m. 1. The mosaic appearance of the surface of biological membranes is primarily due to the presence of: a. phospholipids and glycolipids. b. transmembrane proteins. c. steroids. d. oligosaccharides. 2. Which of the following pass through biological membranes without any special transport mechanism? a. Viruses and food particles b. Amino acids and simple sugars c. Fatty acids and phospholipids d. N 2 and O 2 3. Transport of water across biological membranes through aquaporins is driven by: a. osmosis. b. bulk transport. c. facilitated diffusion. d. active transport. 4. A gated channel mechanism of transport across a biological membrane is an example of: a. osmosis. b. bulk transport. c. facilitated diffusion. d. active transport. 5. Which one of the following is moved across some biological membranes via an ATP-driven electrogenic pump? a. Proteins b. H + c. Polar lipids d. CO 2
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Fall 2010 Exam 3 p. 2 BIO 311c Brand The following two questions pertain to a chemical reaction, A B . There is exactly an equal amount of A and B in the solution when this reaction comes to equilibrium in solution under standard conditions. 6. What is the equilibrium constant (K eq ) of this reaction? a. - 5.7 b. 1 c. 0 d. - 1 7. What is the Δ G° (in units of kJ/mole) of this reaction? a. - 5.7 b. 1 c. 0 d. - 1 8. What is the Δ G° (in units of kJ/mole) of the reaction: B A? a. + 5.7 b. 1 c. 0 d. - 1 9. Which one of the following reactions would you expect to be most exergonic? a. The hydrolysis of UTP to UDP + P i b. The hydrolysis of AMP to A + P i c. The dehydration of glucose + P i to produce glucose-6-phosphate d. The isomerization of D-glucose to produce D-fructose 10. Catalysts speed up the rates of chemical reactions that involve breaking and making covalent bonds by: a. increasing the Δ G° value of reactions. b. decreasing the
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This note was uploaded on 04/30/2011 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas at Austin.

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Key Exam 3 - BIOLOGY 311C - Brand Fall 2010 NAME (printed...

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