Question
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.
enzymes are specific biological catalysts that can normally function at very high temperature $$\left( {T \sim 1000K} \right)$$
D.
enzymes are specific biological catalysts that possess well-defined active sites
Answer :
acts as an oxygen carrier in the blood
Solution :
Haemoglobin acts as an oxygen carrier in the blood since it reacts with oxygen to form unstable oxyhaemoglobin which easily breaks to give back haemoglobin and oxygen.