MDCAT Biology MCQ #634

What is the purpose of the proton gradient in the electron transport chain?

MDCAT Biology MCQ #634

  1. Question 1

    Q1. What is the purpose of the proton gradient in the electron transport chain?

    • A) To generate ATP through substrate-level phosphorylation
    • B) To produce NADH and FADH2
    • C) To drive the synthesis of ATP through chemiosmosis
    • D) To facilitate the citric acid cycle

    Answer: To drive the synthesis of ATP through chemiosmosis

    Explanation: Proton gradient: drives ATP synthesis, not substrate-level phosphorylation.