Zoology - Breathing and Exchange of Gases Question with Solution | TestHub

Carbonic anhydrase enzyme is found in a very high concentration in RBCs but in very low quantities in the plasma. It mediates the following reaction in both directions,

$\mathrm{C}{\mathrm{O}}_2+{\mathrm{H}}_2\mathrm{O}\mathrm{ }\leftarrow$Carbonic anhydrase$\to {\mathrm{H}}_2\mathrm{C}{\mathrm{O}}_3\leftarrow$Carbonic anhydrase$\to \mathrm{H}\mathrm{C}{\mathrm{O}}_3^{-}+{\mathrm{H}}^{+}$

At the tissue site,${\mathrm{p}\mathrm{C}\mathrm{O}}_2$is high due to catabolism (cellular respiration)$\to \mathrm{ }{\mathrm{C}\mathrm{O}}_2$diffuses into blood (RBCs and plasma) and forms${\mathrm{H}\mathrm{C}\mathrm{O}}_3^{-}$and${\mathrm{H}}^{+.}$