Protons are pumped by mitochondria during active electron transport
A) into the thylakoid lumen.
B) outside the outer mitochondrial membrane.
C) into the mitochondrial matrix.
D) outside the inner mitochondrial membrane.

Question

Quizplus · Accepted Answer

During active electron transport, protons are pumped from the mitochondrial matrix to the intermembrane space, outside the inner mitochondrial membrane. This creates an electrochemical gradient which drives ATP synthesis in the process of oxidative phosphorylation.

Protons Are Pumped by Mitochondria During Active Electron Transport