When we come to the end of an ATP accounting problem for a fatty acid we have to

Question

When we come to the end of an ATP accounting problem for a fatty acid we have to subtract 2 ATP equivalents. Why is that?

A. Two ATP molecules are consumed in the activation of a fatty acid.

B. This is because of unsaturation in the fatty acid.

C. Because the last product released, succinyl CoA, does not lead to as much ATP synthesis as does acetyl CoA.

D. Because in fatty acid activation, PPi is hydrolyzed to 2 Pi and this is equivalent to consuming a second ATP molecule in the activation process for the fatty acid.

Explanation / Answer

its correct answer is A. Two ATP molecules are consumed in the activation of a fatty acid.

total 122 produced and two are consumed in activation of fatty acid so net ATP produced 122-2=120

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