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Respiration in Plants
Question
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In the electron transport chain, in terminal oxidation, the cytochrome, which donates electrons to O2 is

  • cytochrome- b 

  • cytochrome- c

  • cytochrome- a3

  • cytochrome- a

Answer

C.

cytochrome- a3

The cytochrome- a3 is an electron carrier which contains copper with iron. It picks up electrons and through copper, it hands over electrons to oxygen. Oxygen accepts electrons finally.

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 What are alternative names of Krebs’ cycle ?

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Cytochrome c oxidase forms which complex in the electron transport chain?