Question

Carbon monoxide prevents transport of oxygen by

• A. Forming stable compound with haemoglobin
• B. Destroying haemoglobin
• C. Forming carbon dioxide with oxygen
• D. Destroying RBCs

Answer 1

The correct option is A Forming stable compound with haemoglobin

Carbon monoxide is a harmful gas that combines with haemoglobin to form a stable compound. It displaces the oxygen that is normally carried by the haemoglobin and reduces the oxygen-carrying ability of the blood. Carbon monoxide may be produced by the incomplete burning of various fuels, such as gasoline, coal, wood, and other carbon-containing materials. It also occurs in automobile exhaust fumes and in cigarette smoke.