Electron Transport Chain

Summary:

Protons (H+ ions) are pumped into the intermembrane space as electrons move

through chains of complexes.

Occurs at the inner membrane where the shuttles drop off electrons to protein complexes (electron carriers).

Intermembrane space

Inner mitochondrial membrane

Oxygen must be present

to accept electrons

at the end of

the

Electrons from glycolysis and the Krebs cycle are transported to the electron transport chain as NADH and FADH2.

FADH2

FADATP synthase

Overall yield:Molecule ETC at inner

membraneATP 32-34H2O 6