A) as bicarbonate ions
B) in the form of dissolved gas molecules
C) by binding to RBC
D) as carbamino-haemoglobin
Correct Answer: A
Solution :
Because of its high solubility, about 7% of carbon dioxide gets dissolved in the blood plasma and is carried to the wings in the same way. The largest fraction of carbon dioxide, i.e., (about 70%) is converted to bicarbonates (\[HCO_{3}^{-}\]) and transported in the plasma. \[C{{O}_{2}}+{{H}_{2}}O{{H}_{2}}C{{O}_{3}}\] \[HCO_{3}^{-}+{{H}^{+}}\] About (- 23% of \[C{{O}_{2}}\] is carried by haemoglobin as carbominohaemoglobin \[C{{O}_{2}}+Hb(haemoglaobin)\rightleftharpoons \underset{\text{carboamino}\,\text{haemoglobin}}{\mathop{HbC{{O}_{3}}}}\,\]
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