Question

Chemiosmotic theory attempts to explain the mechanism of ________.

• A. Oxidative phosphorylation
• B. C3 cycle
• C. Pentose Phosphate pathway
• D. Uptake of minerals

Hint:

Think about how ATP synthase uses a proton gradient.

Answer 1

The Correct Option is A

Step 1: Chemiosmosis describes ATP synthesis being coupled to the movement of protons down their concentration gradient through ATP synthase.

This proton gradient is built up by the electron transport chain during oxidative phosphorylation in mitochondria.

None of the other listed processes, C3 fixation, the pentose phosphate pathway, or mineral uptake, depend on this specific proton driven ATP synthesis mechanism, so oxidative phosphorylation is the answer.