How many moles of carbon dioxide are produced by the complete oxidation of 1 mole of pyruvate?
Correct answer: C. 3
- A. 1 mole
- B. 2 mole
- C. 3
- D. 4
Explanation
The complete oxidation of one mole of pyruvate produces three moles of carbon dioxide. This is because pyruvate, a three-carbon compound, is first converted into acetyl-CoA with the release of one molecule of carbon dioxide, and the remaining two carbons are released as two more carbon dioxide molecules during the citric acid cycle. Therefore, all three carbons from pyruvate end up as carbon dioxide, making three moles the correct answer.One mole: Only one carbon would be oxidized, leaving two unaccounted for.Two moles: Misses one carbon released during the acetyl-CoA formation step.Four moles: Impossible since pyruvate contains only three carbon atoms.
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