MCQ
$CO$ is toxic because it forms complex with $......$ in the blood.
- ACarbohydrate.
- BProtein.
- ✓Haemoglobin.
- DNone of these.
✓
Answer
Correct option: C.
Haemoglobin.
Carbon monoxide binds very strongly to the iron in hemoglobin. Once carbon monoxide attaches, it is very difficult to release. While breathing in carbon monoxide, it sticks to your hemoglobin and takes up all of the oxygen$-$binding sites. Eventually, blood loses all of its ability to transport oxygen and will cause unconsciousness.
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