Which of the following statements about the proton motive force (PMF) is TRUE? T

Question

Which of the following statements about the proton motive force (PMF) is TRUE?

The PMF requires the concentration of protons on the inside of the cytoplasmic membrane to be higher than the concentration on the outside of the cytoplasmic membrane.
The proton motive force is only used for ATP synthesis.
The proton motive force requires charge separation across the cytoplasmic membrane, which is a form of stored energy.
Iron-sulfur cluster proteins are solely responsible for carrying protons from the inside of the cell to the outside.

Explanation / Answer

Answer: c. The proton motive force is only used for ATP synthesis. As ATP synthase is coupled with proton motive force for the synthesis of ATP.

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