Which of the following statements describes NAD??
A) NAD? is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle.
B) NAD? has more chemical energy than NADH.
C) NAD? is oxidized by the action of hydrogenases.
D) NAD? can donate electrons for use in oxidative phosphorylation.
E) In the absence of NAD?, glycolysis can still function.
Answer: A
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