Chapter 14 Glycolysis, Gluconeogenesis, and the Pentose

162Chapter 14 Glycolysis, Gluconeogenesis, and the Pentose Phosphate Pathway19. GlycolysisPage: 530 Difficulty: 2 Ans: AThe first reaction in glycolysis that results in the formation of an energy-rich compound (i.e., acompound whose hydrolysis has a highly negative ∆G'°) is catalyzed by:A) glyceraldehyde 3-phosphate dehydrogenase.B) hexokinase.C) phosphofructokinase-1.D) phosphoglycerate kinase.E) triose phosphate isomerase.20. GlycolysisPage: 530 Difficulty: 1 Ans: DWhich of the following is a cofactor in the reaction catalyzed by glyceraldehyde 3-phosphatedehydrogenase?A) ATPB) Cu 2+C) hemeD) NAD +E) NADP +21. GlycolysisPage: 532 Difficulty: 2 Ans: AInorganic fluoride inhibits enolase. In an anaerobic system that is metabolizing glucose as asubstrate, which of the following compounds would you expect to increase in concentration followingthe addition of fluoride?A) 2-phosphoglycerateB) GlucoseC) GlyoxylateD) PhosphoenolpyruvateE) Pyruvate22. Feeder pathways for glycolysisPage: 534 Difficulty: 1 Ans: CGlycogen is converted to monosaccharide units by:A) glucokinase.B) glucose-6-phosphataseC) glycogen phosphorylase.D) glycogen synthase.E) glycogenase.