Question

What is the net yield of ATP (or equivalents) that can be expected from this?

Question 2 1 pts Assume that one molecule of phosphoenolpyruvate (PEP) is catabolized under aerobic conditions. What is the net yield of ATP (or equivalents) that can be expected from this? Assume that re-oxidation of NADH via the electron transport chain yields the equivalent of 2.5 ATP, and that re-oxidation of FADH2 yields 1.5 ATP) Enter your answer to the nearest tenths.

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Answer 1

One molecule of PEP under aerobic conditions will give 13.5 ATP.

Explanation :

Glycolysis

1 Phosphoenolpyruvate $\rightarrow$ 1 pyruvate 1ATP

Mitochondrial reactions

1 pyruvate $\rightarrow$ 1 Acetyl-coA 1 NADH= 2.5 ATP

1 isocitrate $\rightarrow$ 1 $\alpha$ -ketoglutarate 1 NADH= 2.5 ATP

1 $\alpha$ -ketoglutarate $\rightarrow$ 1 succinyl-coA 1 NADH= 2.5 ATP

1succinyl-coA $\rightarrow$ 1 succinate 1 ATP

1 succinate $\rightarrow$ 1 fumarate 1 FADH_{2 =} 1.5 ATP

1 malate $\rightarrow$ 1 oxaloacetate 1 NADH= 2.5 ATP

Total ATP = 13.5