As electrons from NADH pass through the electron transport system,
A) the oxidized form of ADP is reduced to ATP.
B) the reduction potential of the mitochondria becomes more thermodynamically favorable.
C) the resulting electron gradient is used to make ATP.
D) protons are pumped across the mitochondrial membrane to create a pH gradient.

Question

Quizplus · Accepted Answer

As electrons pass through the electron transport chain, protons are pumped across the mitochondrial membrane, creating a proton gradient (pH gradient) that is used to drive ATP synthesis.

As Electrons from NADH Pass Through the Electron Transport System