Complex I of the Electron Transport Chain Oxidizes ____, Reduces

Question

Complex I of the electron transport chain oxidizes ____, reduces ____, and ____ protons in the process.
A) FADH2; coenzyme Q; doesn't pump
B) FADH2; coenzyme Q; pumps
C) NADH; coenzyme Q; doesn't pump
D) NADH; coenzyme Q; pumps

Accepted Answer

Complex I of the electron transport chain oxidizes NADH, reduces coenzyme Q, and pumps protons in the process.