What is chemiosmosis?

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Multiple Choice

What is chemiosmosis?

Chemiosmosis is the process by which a proton gradient across a membrane powers ATP synthesis via ATP synthase. In mitochondria, the electron transport chain pushes protons from the matrix into the intermembrane space, creating a gradient. Protons then diffuse back into the matrix through ATP synthase, and as they pass through, the enzyme uses that flow to drive the formation of ATP from ADP and inorganic phosphate. This flow of protons down their electrochemical gradient turning into chemical energy is the essence of chemiosmosis. The option describing protons diffusing back into the mitochondria through ATP synthase to drive ATP synthesis captures this mechanism.

Chemiosmosis is the process by which a proton gradient across a membrane powers ATP synthesis via ATP synthase. In mitochondria, the electron transport chain pushes protons from the matrix into the intermembrane space, creating a gradient. Protons then diffuse back into the matrix through ATP synthase, and as they pass through, the enzyme uses that flow to drive the formation of ATP from ADP and inorganic phosphate. This flow of protons down their electrochemical gradient turning into chemical energy is the essence of chemiosmosis. The option describing protons diffusing back into the mitochondria through ATP synthase to drive ATP synthesis captures this mechanism.

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