Chem349-Some study questions 1. Are there any advantages to utilizing glucose as

Question

Chem349-Some study questions 1. Are there any advantages to utilizing glucose as an energy source compared to glucose stored as glycogen as an energy source? To address this question, first determine the number of ATP molecules (net) that will be produced from glycolysis when 23 glucose molecules are oxidized to enter a number) pyruvate molecules. Net number of ATP molecules produced 4 Net number of NADH molecules produced Next, determine the number of ATP molecules (net) that will be produced from ulo USed A TP 410 2 APe ysis when 23 glucose residues are released from glycogen and oxidized to enter a number) pyruvate molecules Net number of ATP molecules produced Net number of NADH molecules produced

Explanation / Answer

1. C6H12O6 +2 NAD+ +2ADP+2P= 2Pyruvic acid+2 ATP+2 NADH+2H+

23 glucose molecules oxidised to 46 pyruvate molecules.

Net number of ATP produced 46

Net number of NADH produced 46

2..Glucose from glycogenolysis enters the glycolytic pathway as glucose-6-phosphate catalized by hexokinase .Therefore glycogen phosphorylase releasing an already activated glucose molecule saves an ATP.

23 glucose residues released from glycogen oxidised to 46 pyruvate moecules.

Net number of ATP produced 69

Net number of NADH produced 46.

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