Which of the following statements about NAD⁺ is true?
a) NAD⁺ is reduced to NADH during glycolysis, pyruvate oxidation, and the Krebs cycle.
b) NAD⁺ has more chemical energy than NADH.
c) NAD⁺ donates high energy electrons to the electron transport chain.
d) In the absence of NAD⁺, glycolysis can still function.

NAD⁺ is reduced to NADH during glycolysis, pyruvate oxidation, and the Krebs cycle.

NAD⁺ has more chemical energy than NADH.

NAD⁺ donates high energy electrons to the electron transport chain.

In the absence of NAD+, glycolysis can still function.

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