Carbon monoxide has a much higher affinity for haemoglobin (about 200-250 times greater) than oxygen. When inhaled, CO binds to haemoglobin forming carboxyhaemoglobin (COHb), effectively reducing the capacity of the blood to transport oxygen. This leads to oxygen deprivation in the body's tissues and organs.
The Poisonous nature of Carbon monoxide (CO) is due to its
Asked in UPSC NDA 1 2018 · Topic: Circulatory System (Components of Blood: Plasma, Erythrocytes, Leukocytes, Platelets)
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Answer: B. ability to form a complex with haemoglobin
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