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How does carbon monoxide, a poisonous gas emitted by automobiles, prevent transport of oxygen into the body tissues?
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- By destroying the haemoglobin
- By forming a stable compound with haemoglobin
- By obstructing the reaction of oxygen with haemoglobin
- By changing oxygen into carbon dioxide.
Correct Option: B
Carbon monoxide, when inhaled, combines with blood haemoglobin to form carboxy-haemoglobin at a rate 210 times faster than the rate at which oxygen forms oxyhaemoglobin. Thus, respiration is impaired.
