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

question 38

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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Definitions:

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Treadle Valve

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An electrical circuit that receives power from a transformer or another circuit rather than directly from a power source, used in various electronic devices.