Cytochrome oxidase can be poisoned by all, EXCEPT:
Correct Answer: Carbon dioxide
Description: Cytochrome oxidase is a haemo-protein widely distributed in many tissues. It is the terminal component of the chain of respiratory carriers found in mitochondria and transfers electrons resulting from the oxidation of substrate molecules by dehydrogenases to their final acceptor, oxygen. The enzyme is poisoned by carbon monoxide, cyanide, and hydrogen sulfide. Ref: Harper 28thedition, chapter 12.
Category:
Biochemistry
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