MDCAT Biology MCQ #401

A researcher uses Dinitrophenol (DNP) to make the inner mitochondrial membrane leaky to protons. Which process will be most significantly inhibited?

MDCAT Biology MCQ #401

  1. Question 1

    Q1. A researcher uses Dinitrophenol (DNP) to make the inner mitochondrial membrane leaky to protons. Which process will be most significantly inhibited?

    • A) Chemiosmosis
    • B) Substrate-level phosphorylation
    • C) Decarboxylation
    • D) Dehydrogenation

    Answer: Chemiosmosis

    Explanation: DNP dissipates the proton gradient, preventing ATP synthesis despite electron flow. Substrate-level phosphorylation is wrong as it is independent of chemiosmosis.