Biology · Human Physiology & Respiration
Carbon monoxide (CO) poisoning is a common and fatal type of gas poisoning. What primarily causes its dangerous toxicity in the human body?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1CO binds strongly to hemoglobin, competing with oxygen and reducing oxygen transport in blood.✓
- 2CO dissolves in cytoplasm and acts as a direct enzyme inhibitor.
- 3CO destroys white blood cells instantly upon inhalation.
- 4CO dissolves in blood plasma and causes severe chemical acidity.
Correct answer
CO binds strongly to hemoglobin, competing with oxygen and reducing oxygen transport in blood.
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