The correct statement in respect of protein haemoglobin is that it
A
Acts as an oxygen carrier in the blood
B
Forms antibodies and offers resistance to diseases
C
Functions as a catalyst for biological reactions
D
Maintains blood sugar level
AIPMT 2004, Easy
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A
Acts as an oxygen carrier in the blood
a (a) Four $F{e^{2 + }}$ ions of each haemoglobin can bind with $4$ molecules of ${O_2}$ and it is carried as oxyhaemoglobin.
$H{b_4} + 4{O_2} \to H{b_4}{O_8}$
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