The first reaction in glycolysis that results in the formation of an energy-rich

Question

The first reaction in glycolysis that results in the formation of an energy-rich compound (i.e., a compound whose hydrolysis has a highly negative G^) is catalyzed by: A) glyceraldchyde 3-phosphate dehydrogenase. B) hexokinase. C) phosphofructokinase-1. D) phosphoglycerate kinase. E) triose phosphate isomerase. 17. Which of the following is a cofactor in the reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase? A) ATP B) CU^2+ D) NAD^+ E) NADP^+ 18. Inorganic fluoride inhibits enolase. In an anaerobic system that is metabolizing glucose as a substrate, which of the following compounds would you expect to increase in concentration following the addition of fluoride? A) 2-phosphoglycerate B) Glucose C) Glyoxylate D) Phosphocnolpyruvate E) Pyruvate 19. Glycogen is converted to monosaccharide units by: A) glucokinase. B) glucose-6-phosphatase C) glycogen phosphorylase. D) glycogen synthase. E) glycogenase. 20. An enzyme used in both glycolysis and gluconeogenesis is: A) 3-phosphoglycerate kinase. B) glucose 6-phosphatase. C) hexokinase. D) phosphofructokinasd-1. F.) pyruvate kinase.

Explanation / Answer

16) Hexokinase- It is the catalyst.

17) NAD+

18)2-Phosphoglycerate

19) Glycogen Phosphorylase.

20) 3-Phosphoglycerate kinase.

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