Question

Exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient because

• A. The compound carboxyhaemoglobin (COHb) it forms with heamoglobin can gradually clot the blood resulting in circulatory failure
• B. COHb reduces the ability of blood for transport oxygen by ruputring a vast majority of erythrocytes
• C. COHb greatly modifies the structure of haemoglobin, thus making it lose its affinity for oxygen
• D. None of the above

Answer 1

The correct option is C COHb greatly modifies the structure of haemoglobin, thus making it lose its affinity for oxygen

(c) COHb is a stable compound formed by the combination of carbon monoxide and haemoglobin. It has more affinity than oxygen.