Why is carbon monoxide from car exhaust and cigarette smoke dangerous?

1. A Option A: It dissolves the alveolar walls
2. B Option B: It blocks the action of carbonic anhydrase
3. C Option C: It increases the number of red blood cells
4. D Option D: It forms stable carboxyhaemoglobin and reduces the oxygen-carrying capacity of blood

Answer checked 11 October 2026 · How we write and check questions