Practice Test 1 Answers

Practice Test 1 Answers - BIOS 10161-2007 Practice Test 1...

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Page 1 of 6 BIOS 10161-2007 Practice Test 1 Refer to the fatty acid structure below to answer the following questions. Choose the most appropriate answer for each structure. Each term may be used once, more than once or not at all. CH3-CH2-CH=CH-CH2-CH=CH-CH2-CH=CH-CH2-CH2-CH2-CH2-CH2-CH2-CH2-COO- 1. What is the molecule illustrated in the figure above? A) a saturated fatty acid B) a mono-unsaturated fatty acid C) a poly-unsaturated trigylceride D) a poly-unsaturated fatty acid E) mono-unsaturated phospholipid 2. The molecule above is: A) an T 3 fatty acid B) an T 6 fatty acid C) a ) 6, 9, 12 fatty acid D) a C18:0 fatty acid E) none of the above 3. Which of the following descriptions best describes phospholipids: A) They are composed of one molecule of glycerol covalently attached to 3 identical fatty acids, through ester linkages B) They are composed of one molecule of glycerol covalently attached to 3 identical fatty acids, through ether linkages C) They are composed of one molecule of glycerol covalently attached to 3 fatty acids that can be the same or different, through ester linkages D) They are composed of one molecule of ribose attached to three different fatty acids, through ether linkages E) They are composed of one molecule of glycerol attached to two fatty acids that can be the same or different, and a phosphatidyl head group, through ester linkages. 4. Trans fatty acids: A) disrupt the phospholipid bilayer, increasing membrane fluidity more than cis fatty acids B) are not common in nature and are predominantly produced commercially C) are only synthesized by bacteria in the stomach of ruminants D) A, B and C are correct E) A and C are correct
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Page 2 of 6 5. The charged head groups of the phospholipids (PC, PS and PE): A) are evenly distributed on the inner and outer leaflets of the plasma membrane
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This homework help was uploaded on 04/17/2008 for the course BIOS 10161 taught by Professor Tenniswood during the Fall '07 term at Notre Dame.

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Practice Test 1 Answers - BIOS 10161-2007 Practice Test 1...

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