Multiple choice

From the oxidation of one molecule of palmitic acid (fatty acid), the number of ATP molecules gained as net are

  1. 132

  2. 131

  3. 130

  4. 129
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D Correct answer
Explanation

Palmitic acid (16 carbons) undergoes 7 cycles of beta-oxidation, producing 8 acetyl-CoA, 7 NADH, and 7 FADH2. Calculating the total ATP yield (including TCA cycle and electron transport chain) results in a net gain of 129 ATP.

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