MDCAT Biology MCQ #508

Considering one single turn of the Krebs cycle, what is the total yield of NADH, FADH2, and ATP (via substrate-level phosphorylation)?

MDCAT Biology MCQ #508

  1. Question 1

    Q1. Considering one single turn of the Krebs cycle, what is the total yield of NADH, FADH2, and ATP (via substrate-level phosphorylation)?

    • A) 1 NADH, 1 FADH2, 1 ATP
    • B) 2 NADH, 2 FADH2, 2 ATP
    • C) 3 NADH, 2 FADH2, 1 ATP
    • D) 3 NADH, 1 FADH2, 1 ATP

    Answer: 3 NADH, 1 FADH2, 1 ATP

    Explanation: Each turn of the Krebs cycle produces 3 NADH, 1 FADH2, and 1 ATP; 2 turns occur per glucose molecule.