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Biology (MCQ)
1. What happen when the exposure to carbon monoxide (from coal gas) is extremely dangerous and can kill a patient?
(A): (A) The compound carboxy-haemoglobin (COHb) it forms with haemoglobin can gradually clot the blood resulting in circulatory failure.
(B): (B) COHb reduces the ability of blood to transport oxygen by rupturing a vast majority of erythrocytes.
(C): (C) COHb is stable compound and thus deprives blood of its ability to transport oxygen.
(D): (D) COHb greatly modifies the structure of haemoglobin thus making it lose its affinity for oxygen.
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