MDCAT Biology MCQ #355

A cell processes two molecules of pyruvate completely through the Krebs cycle and ETC. How many ATP molecules are generated specifically from FADH2?

MDCAT Biology MCQ #355

  1. Question 1

    Q1. A cell processes two molecules of pyruvate completely through the Krebs cycle and ETC. How many ATP molecules are generated specifically from FADH2?

    • A) 4 ATP
    • B) 6 ATP
    • C) 2 ATP
    • D) 3 ATP

    Answer: 4 ATP

    Explanation: Two pyruvates yield two FADH2 molecules, which produce four ATP via chemiosmosis. Six ATP is wrong as that corresponds to two NADH.