How CO emitted by automobiles prevents transport of O2 in the body tissues?
Correct answer: A. By forming a stable compound with haemoglobin
- A. By forming a stable compound with haemoglobin
- B. By destroying the haemoglobin
- C. By changing O2 into CO
- D. By obstructing the reaction of O2 with haemoglobin
Explanation
Carbon monoxide binds haemoglobin to form carboxyhaemoglobin, a stable compound that prevents haemoglobin from carrying oxygen effectively. CO therefore causes tissue oxygen deficiency even when oxygen is present in the air.
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