. Draw the diagram of the mitochondrial Electron Transport System (ETS).
GeneralClass 12AllAnswered 27 Mar 2026
Answer
[Intermembrane Space] ← 2H⁺ ← [Matrix]
↓
[NADH + H⁺]
↓
[Complex I: NADH Dehydrogenase] → NAD⁺
↓
[Ubiquinone (CoQ)]
↓
[Complex II: Succinate Dehydrogenase] ← FADH₂ → FAD
↓
[Ubiquinol (Reduced CoQ)]
↓
[Complex III: Cytochrome bc₁]
↓
[Cytochrome c] (mobile carrier)
↓
[Complex IV: Cytochrome c Oxidase (a, a₃)]
↓
½O₂ + 2H⁺ → H₂O
Proton pumping at Complexes I, III, and IV creates an electrochemical gradient used by ATP synthase (F₀–F₁) to synthesize ATP.
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