question_answer

In blood,  in transported majorly as

A)  sodium carbonate

B)  carboxyhaemoglobin

C)  bicarbonate

D)  as such

Correct Answer: C

Solution :

In dissolved state 7% of  gets dissolved in the blood plasma and is carried in solution to lungs or about 0.3 mL of is transported per 100 mL of blood in dissolved state in blood plasma. In the form of bicarbonate about 70% of (about 2.5 mL per 100 mL of blood) received by blood from tissues, enters the RBCs where it reacts with water to form carbonic add . As carbaminohaemoglobin about 23% of is   transported   in   combination   with haemoglobin and plasma proteins. reacts directly with amine radicals  of haemoglobin to form an unstable compound carbamino-haemoglobin . Sodium bicarbonate acts as buffer of blood.