Which of the following vitamins are precursors to coenzymes that are necessary f
ID: 68001 • Letter: W
Question
Which of the following vitamins are precursors to coenzymes that are necessary for the formation of acetyl CoA from pyruvate?
thiamine, riboflavin, niacin, lipoic acid, and pantothenic acid
thiamine, riboflavin, niacin, lipoic acid, pantothenic acid, and biotin
thiamine, riboflavin, niacin, and biotin
thiamine, riboflavin, and lipoic acid
None of the above.
Which of the following vitamins are precursors to coenzymes that are necessary for the formation of acetyl CoA from pyruvate?
thiamine, riboflavin, niacin, lipoic acid, and pantothenic acid
thiamine, riboflavin, niacin, lipoic acid, pantothenic acid, and biotin
thiamine, riboflavin, niacin, and biotin
thiamine, riboflavin, and lipoic acid
None of the above.
Explanation / Answer
thiamine, riboflavin, niacin, lipoic acid, and pantothenic acid
Thiamine is precursor of TPP which is coenzyme of the first enzyme of PDH complex, E1
lipoic acid and pantothenic acid (vitamin B5) is precursor of coenzymes of E2, the second enzyme of PDH complex.
Riboflavin (vitamin B2) is precursor of FAD and FMN which are coenzymes of E3, the third enzyme of PDH complex. Niacin is precursor of NAD which is also coenzyme of E3.
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