Energy and Metabolism

ID #1671

Why does NADH from TCA cycle produces 3 ATPs instead of 2?

Because there is no transport "cost" that has to be spent. Krebs cycle occurs in the matrix, so if an NADH molecule is produced during Krebs cycle and needs to get to Complex I, it simply has to move over to the nearest ETC, where the "hand-off" point is facing the matrix.

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