NADH→FAD(Fe-S)→CoQ→Cytb→C→c→aa→O
NADH→CoQ→Cytb→C→C→aa→O
NADH→FAD(Fe-S)→CoQ→Cytc→C→b→aa→O
NADH→FMN(Fe-S)→CoQ→Cytb→C→C→aa→O
FADH→FMN(Fe-S)→CoQ→CytC→C→b→aa→O
→c→aa
→O
→C→aa→O→b→aa→O→C→aa→O→FMN(Fe-S)→CoQ→CytC→C→b→aa→O