alleryStart learning →Which carrier compound picks up and activates the acetyl group derived from pyruvate?
AUbiquinone
BPlastocyanin
CCoenzyme A
DCytochrome b
Answer & Solution
Correct answer: C. Coenzyme A
1. Pyruvate is first transformed into an acetyl group inside the mitochondrion.
2. A carrier compound called coenzyme A picks up and activates that acetyl group.
3. The resulting compound is called acetyl coenzyme A.
4. Ubiquinone and cytochrome b belong to the electron transport chain and never carry acetyl groups.
_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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