Which is the only electron carrier in the electron transport system that is not embedded in a membrane?
A) ATP
B) cytochrome c
C) coenzyme Q
D) complex I

Question

Quizplus · Accepted Answer

Cytochrome c is the only electron carrier that is not embedded in a membrane. It is soluble in the mitochondrial intermembrane space and shuttles electrons between complex III and complex IV in the electron transport chain. The other options - ATP, coenzyme Q, and complex I - are all embedded in the inner mitochondrial membrane.

Which Is the Only Electron Carrier in the Electron Transport