Which of the Following Processes Generates a Proton-Motive Force in Mitochondria

question 43

Multiple Choice

Which of the following processes generates a proton-motive force in mitochondria?

• A) The flow of protons through ATP synthase down their concentration gradient.
• B) The reduction of NAD⁺ by the first electron carrier in the electron transport chain.
• C) Lowering of pH in the mitochondrial matrix.
• D) Pumping of hydrogen ions from the mitochondrial matrix across the inner membrane and into the intermembrane space.

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