NADH and FADH2 are examples of nonessential vitamins.

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Multiple Choice

NADH and FADH2 are examples of nonessential vitamins.

Explanation:
NADH and FADH2 are not vitamins themselves. They are the reduced electron-carrier forms of the coenzymes NAD+ and FAD, which come from the B vitamins niacin (B3) and riboflavin (B2). Vitamins are small organic nutrients that may be essential or nonessential for health, but NADH and FADH2 are products of metabolism that donate electrons during cellular respiration. So the statement is misleading because it treats NADH and FADH2 as vitamins, when they are actually reduced coenzymes derived from vitamin precursors.

NADH and FADH2 are not vitamins themselves. They are the reduced electron-carrier forms of the coenzymes NAD+ and FAD, which come from the B vitamins niacin (B3) and riboflavin (B2). Vitamins are small organic nutrients that may be essential or nonessential for health, but NADH and FADH2 are products of metabolism that donate electrons during cellular respiration. So the statement is misleading because it treats NADH and FADH2 as vitamins, when they are actually reduced coenzymes derived from vitamin precursors.

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