MDCAT Biology MCQ #429

The Krebs cycle produces several reduced coenzymes, but FADH2 is exclusively generated during the oxidation of which substrate?

MDCAT Biology MCQ #429

  1. Question 1

    Q1. The Krebs cycle produces several reduced coenzymes, but FADH2 is exclusively generated during the oxidation of which substrate?

    • A) Isocitrate to Alpha-ketoglutarate
    • B) Alpha-ketoglutarate to Succinyl-CoA
    • C) Malate to Oxaloacetate
    • D) Succinate to Fumarate

    Answer: Succinate to Fumarate

    Explanation: FADH2 is only produced during the conversion of Succinate to Fumarate. Malate to Oxaloacetate is tempting but produces NADH.