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7.Human Health and Disease
normal
Haemoglobin of the human blood forms a stable complex compound with which of the following gas leading to death?
A
Oxygen
B
Carbon dioxide
C
Carbon monoxide
D
Nitrogen
Solution
$98.5 \%$ of $O_{2}$ is transported by blood with the help of haemoglobin. The molecule of haemoglobin has $250$ times more affinity with $CO$ as compare to $O_{2}$ and thus, prevent $O_{2}$ transport which leads to death.
Standard 12
Biology