A) sodium carbonate
B) carboxy haemoglobin
C) bicarbonate
D) \[C{{O}_{2}}\] as such
Correct Answer: C
Solution :
Transport of \[C{{O}_{2}},\]in blood In dissolved state: 7% of \[C{{O}_{2}}\]gets dissolved in the blood plasma and is carried in solution to lungs. Or, About 0.3 ml of \[C{{O}_{2}}\]is transported per 100 ml of blood in dissolved state in blood plasma. In the form of bicarbonate: About 70% of \[C{{O}_{2}}\](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 acid \[({{H}_{2}}C{{O}_{3}}).\] As carbaminohaemogloblln : About 23% of \[C{{O}_{2}}\] is transported in combination with haemogloblin and plasma proteins. \[C{{O}_{2}}\]reacts directly with amine radicals \[(N{{H}_{2}})\] of haemogloblin to form an unstable compound carbamino-haemoglobin \[(Hb.C{{O}_{2}})\] Sodium bicarbonate acts as buffer of blood.
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