alleryStart learning →Coenzyme A is made from which vitamin?
AVitamin B1, called thiamine
BVitamin B2, called riboflavin
CVitamin B3, called niacin
DVitamin B5, pantothenic acid
Answer & Solution
Correct answer: D. Vitamin B5, pantothenic acid
1. Several respiratory helper molecules trace back to different B vitamins, so the labels must be kept apart.
2. Coenzyme A is made from vitamin B5, pantothenic acid.
3. Nicotinamide adenine dinucleotide is derived from vitamin B3, niacin, so that pairing belongs elsewhere.
4. Flavin adenine dinucleotide and flavin mononucleotide both trace to vitamin B2, riboflavin.
5. Thiamine pyrophosphate, from vitamin B1, is the coenzyme of pyruvate decarboxylase in alcohol fermentation.
6. Reading the number rather than the vitamin letter is what makes this set of four so easy to confuse.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.3 Oxidation of Pyruvate and the Citric Acid Cycle_
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