Pg 5.jpeg - TRUE or FALSE Glycogen is the main storage polysaccharide in vertebrate animals TREE FALSE Starch is composed of amylose and amylopectin

Pg 5.jpeg - TRUE or FALSE Glycogen is the main storage...

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Unformatted text preview: TRUE or FALSE: Glycogen is the main storage polysaccharide in vertebrate animals. TREE . FALSE: Starch is composed of amylose and amylopectin. TRUE or FALSE: Glycogen is made of glucose monomers connected via (al-2) linkages. FREE FALSE: Humans cannot digest cellulose. BIOS-352/CHEM-352 Introductory Biochemistry Course Examination #2 Page 4 of 8 STUDENT'S NAME: Question 12 (2 points): A major component of RNA but not of DNA is: A. Thymine B. Adenine C. Cytosine D. Uracil E. Guanine Question 13 (7 points, 1 point will be subtracted for each wrong answer): A nucleotide can contains which of the following units: A. Deoxyribose B. Triacylglycerol C. Nucleobase D. Glucose E. Ribose F. Mono-, di-, or triphosphate group G. Phosphatidylethanolamine Question 14 (2 points): Which of the following is not true of any naturally occurring DNA molecule? A. Three hydrogen bonds form between guanine and cytosine B. The two complementary strands are antiparallel C. The amount of adenines always equals the amount of thymines D. The ratio A+T/G+C is constant for all natural DNAs E. Deoxyribose units are connected by 3',5'-phosphodiester bonds Question 15 (2 points): Which of the following is true about the Watson-Crick model of DNA structure (also called B- form DNA): A. G-C pairs share two hydrogen bonds B. Nucleobases occupy the interior of the double-helix C. A-T pairs share three hydrogen bonds D. 5'-ends of both strands are at one end of the double helix E. A purine in one strand always hydrogen bonds with a purine in the other strand Question 15 (2 points): Sample of DNA isolated from bacterium X contains 19.5% of adenine bases. What percentages of guanine, thymine, and cytosine bases would you expect to find in the same sample of DNA? Answer: G = 30.5%; T = 19.5%; C = 30.5% BIOS-352/CHEM-352 Introductory Biochemistry Course Examination #2 Page 5 of 8 STUDENT'S NAME: Question 16 (10 points, 2 points for each correct answer): What is the name of each of the following nucleotides designated A-E (1.5 points each)? What type of polymer (DNA vs. RNA) it can be a part of (0.5 point each)? NH2...
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  • Spring '11
  • Nicholas
  • Exam #2

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