KROK 1 2017 – Question 116 · KROK (Medicine) · Biological Chemistry

Cytochrome oxidase is a hemeprotein that is an end component of the mitochondrial respiratory chain. What reaction is catalyzed with this enzyme?

  1. A. Adenosine triphosphate synthesis
  2. B. Transfer of reduced equivalents to ubiquinone
  3. C. Transfer of reduced equivalents to molecular oxygen
  4. D. Cytochrome splicing
  5. E. Cytochrome synthesis
Hint

Since this is the terminal component of the chain, ask where the electrons that reach it finally go.

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