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If a 18:0 fatty acid is oxidized completely via β-oxidation and the citric acid cycle, and...

If a 18:0 fatty acid is oxidized completely via β-oxidation and the citric acid cycle, and all of the energy conserving products (NADH, FADH2) are used to drive ATP synthesis in the mitochondria, the net yield of ATP is:

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Answer #1

Oxidation of palmitic acid yields 7 NADH + 7 FADH + 8 acetylcoA in 7 cycle of mitochondrial beta oxidation. Every acetyl-CoA yields 3 NADH + 1 FADH2 + 1 GTP (=ATP) during krebs cycle.

Concidering an average production of 3ATP/NADH and 2 ATP/FADH2 using the respiratory change, you have 131 ATP molecules. However you have t used 2 ATP molecule for the initial activation of every fatty acid that is going to be oxidized in the mitochondria.

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