In the payoff phase of glycolysis, NAD+ is reduced to NADH + H+ during the conversion of:
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Correct answer: PGAL to BPGA
During the oxidation of 3-phosphoglyceraldehyde (PGAL) to 1,3-bisphosphoglycerate (BPGA), electrons are transferred to NAD+. This step is essential for the subsequent generation of ATP.
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