When electrons flow along the electron transport chains of mitochondria, which of the following changes occurs?
A) The pH of the matrix increases.
B) ATP synthase pumps protons by active transport.
C) The electrons gain free energy.
D) NAD⁺ is oxidised.

Question

Quizplus · Accepted Answer

As electrons move through the electron transport chain, protons are pumped from the mitochondrial matrix to the intermembrane space, increasing the pH of the matrix due to a decrease in proton concentration.

When Electrons Flow Along the Electron Transport Chains of Mitochondria