Question

Assertion Cytochrome oxidase enzyme contain copper.
Reason Cyanide combines with the copper of cytochrome oxidase and prevents $O_{2}$ combining with it.

• A. If both Assertion and Reason are true and reason is correct explanation of Assertion
• B. If both Assertion and Reason are true but reason is not the correct explanation of Assertion
• C. If Assertion is true but Reason is false
• D. If both Assertion and Reason are false

Answer 1

Answer: (C)

The final stage of respiratory chain involves cytochrome oxidase which contain copper. This stage can be specifically inhibited by cyanide or carbon monoxide cyanide combines with copper and prevents $O _{2}$ combining with it.