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Pyruvate oxidation

Biology • Cellular Respiration • Knowledge-Based • 1 questions

Pyruvate oxidation Knowledge-Based Download PDF

Biology · Cellular Energetics · Biology · Cellular Respiration

1 Biology practice questions on Pyruvate oxidation. Questions that assess core concepts and understanding.

Questions

  1. 1.

    During pyruvate oxidation in eukaryotic cellular respiration, which of the following events takes place for each molecule of pyruvate that enters the mitochondrial matrix?

    • A) FAD is reduced to FADH2 while one molecule of ATP is generated through substrate-level phosphorylation.
    • B) One carbon atom is released as carbon dioxide, NAD+ is reduced to NADH, and an acetyl group attaches to coenzyme A.
    • C) Pyruvate combines directly with oxaloacetate to synthesize citrate without releasing carbon dioxide.
    • D) Two carbon atoms are removed as carbon dioxide molecules, forming a one-carbon intermediate attached to coenzyme A.