Electron path in complex Il Oxidation of Oxidation of first QH second QH2 Intermembrane Cyt c vtc space(P side) 2H C 2H. C FeS b b QH QH2 2H+ Matrix (N side) QH2+ Cyt c,(oxidized) QH2+Q+2HN+Cyt c,(oxidized) Q+2Hp Cyt c, (reduced) QH2+2Hp+Q+Cyt c,(reduced) Net equation QH2+ 2 Cyt c(oxidized)+ 2HN-)Q+2 Cyt c (reduced)+ 4HpElectron path in complex III