A) sodium carbonate
B) carboxyhaemoglobin
C) bicarbonate
D) \[C{{O}_{2}}\]as such
Correct Answer: C
Solution :
Transport fo \[C{{O}_{2}},\]in blood In dissolved state : 7% of \[C{{O}_{3}}\]gets dissolved in the blood plasma and is carried in solution to lungs or about 0.3 mL of \[C{{O}_{3}}\]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 Carbaminohaemogloblin : 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 haemoglobin to form an unstable compound carbamino-haemogloblin \[(Hb.C{{O}_{2}}).\] Sodium bicarbonate act as buffer of blood.
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