Question Detail
Question
Which part of the mitochondrion accumulates protons during oxidative phosphorylation?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The electron transport chain pumps protons from the matrix across the inner membrane and into the intermembrane space. This creates a high concentration of protons there, establishing the electrochemical gradient.
Hint
It's the compartment between the two membranes.