Question

In presence of cyanide, azide and carbon monoxide the rate of respiration

• A. Decreases
• B. Increases
• C. Remain the same
• D. None of the above

Answer 1

The correct option is A Decreases

Cyanide essentially prohibits the electron transport chain from occurring. This vital process in cellular respiration leads to lack of ATP production and shuts down the cell, thereby leading to cell death. Azide and carbon monoxide being more inhibitory compounds prohibits the cellular respiration leading to cell death as they are able to replace oxygen from its carrier. This leads to a decrease in respiratory rate due to the decrease in the availability of oxygen.

So the correct option is 'Decreases'.