Practice Exams › AP Biology — Cell Respiration › Question #22
High-School-Ap Biology
The proton gradient that drives ATP synthase is established across the:
1
Inner mitochondrial membrane
✓ Correct Answer

Explanation

In eukaryotes, the electron transport chain pumps H+ from the matrix into the intermembrane space across the INNER mitochondrial membrane. ATP synthase then runs H+ back through into the matrix, coupling H+ flow to ATP synthesis.

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