Biology · Plant Physiology

Which of the following sequential reactions correctly represents the standard main pathway of electron flow from NADH to O2 in the plant mitochondrial respiratory chain?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1NADH dehydrogenase → Cytochrome c → Ubiquinone → Alternative oxidase
2NADH dehydrogenase → Ubiquinone → Alternative oxidase → Cytochrome c oxidase
3NADH dehydrogenase → Succinate dehydrogenase → Ubiquinone → Cytochrome c → Cytochrome bc1
4NADH dehydrogenase → Ubiquinone → Cytochrome bc1 → Cytochrome c → Cytochrome c oxidase✓

Correct answer

NADH dehydrogenase → Ubiquinone → Cytochrome bc1 → Cytochrome c → Cytochrome c oxidase

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