ch15 - Chapter 15 Principles of Metabolic Regulation...

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Principles of Metabolic Regulation Multiple Choice Questions 1. The metabolism of glycogen in animals Pages: 568-569 Difficulty: 2 The glycogen-branching enzyme catalyzes: A) degradation of ( α 1 4) linkages in glycogen B) formation of ( 1 4) linkages in glycogen. C) formation of ( 1 6) linkages during glycogen synthesis. D) glycogen degradation in tree branches. E) removal of unneeded glucose residues at the ends of branches. 2. The metabolism of glycogen in animals Pages: 569-570 Difficulty: 2 Glycogenin: A) catalyzes the conversion of starch into glycogen. B) is the enzyme responsible for forming branches in glycogen. C) is the gene that encodes glycogen synthase. D) is the primer on which new glycogen chains are initiated. E) regulates the synthesis of glycogen. 3. The metabolism of glycogen in animals Pages: 568, 586 Difficulty: 2 Which of the following is true of glycogen synthase? A) Activation of the enzyme involves a phosphorylation. B) It catalyzes addition of glucose residues to the nonreducing end of a glycogen chain by formation of ( 1 4) bonds. C) It uses glucose-6-phosphate as donor of glucose units D) The conversion of an active to an inactive form of the enzyme is controlled by the concentration of cAMP. E) The enzyme has measurable activity only in liver. 4. The metabolism of glycogen in animals Pages: 568-569 Difficulty: 2 Which one of the following statements abour mammalian glycogen synthase is not correct? A) It is especially predominant in liver and muscle. B) The donor molecule is a sugar nucleotide. C) The phosphorylated form of this enzyme is inactive. D) This enzyme adds glucose units to the nonreducing end of glycogen branches. The metabolism of glycogen in animals Page: 562 Difficulty: 2
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This note was uploaded on 10/10/2011 for the course CHEMISTRY CHM2046 taught by Professor Johnston during the Spring '11 term at University of South Florida - Tampa.

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ch15 - Chapter 15 Principles of Metabolic Regulation...

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