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NEET Biology Respiration In Plants Question Bank Krebs Cycle and ETS

  • question_answer
    In an electron transport chain in terminal oxidation the cytochrome which donates electrons to\[{{O}_{2}}\]is [CPMT 1990]

    A) Cytochrome b

    B) Cytochrome c

    C) Cytochrome\[{{a}_{3}}\]

    D) Cytochrome a

    Correct Answer: C

    Solution :

    Cytochrome a3 is terminal cytochrome of ETC. It has \[F{{e}^{+++}}\]and\[C{{u}^{++}}\]both. With\[F{{e}^{+++}}\], it picks up electrons and through\[C{{u}^{+}}\]it passes electrons to oxygen.


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