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MHT CET Medical202623 April 2026Morning ShiftBiologyRespiration in PlantsActual

Which cytochrome acts as a mobile electron carrier, transferring electrons between complex III and IV during ETS?

Options

  1. ACytochrome a
  2. BCytochrome bc₁
  3. CCytochrome c
  4. DCytochrome a₃

Correct answer

C. Cytochrome c

Step-by-step solution

Cytochrome c is a small protein attached to the outer surface of the inner mitochondrial membrane. It acts as a mobile carrier for the transfer of electrons between complex III (cytochrome b c₁ complex) and complex IV (cytochrome c oxidase complex). Therefore, cytochrome c is the correct mobile electron carrier. Answer: Cytochrome c

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