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Question: Answered & Verified by Expert
In an electron transport chain, the cytochrome which donates electrons to O2 is
BiologyRespiration in PlantsNEET
Options:
  • A Cytochrome b
  • B Cytochrome c
  • C Cytochrome a3
  • D Cytochrome a
Solution:
2044 Upvotes Verified Answer
The correct answer is: Cytochrome a3
Cytochrome a3 is the terminal cytochrome of ETC. It has Fe+3 and Cu+2 both. With Fe+3, it picks up electrons and through Cu+2, it passes electrons to oxygen.

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