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

In dissolved state$7\%$ of ${\mathrm{CO}}_2$ gets dissolved in the blood plasma and is carried in solution to lungs or about 0.3 mL of ${\mathrm{CO}}_2$ is transported per 100 mL of blood in dissolved state in blood plasma.In the form of bicarbonateabout $70\%$ of ${\mathrm{CO}}_2$ (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 $\left({\mathrm{H}}_2{\mathrm{CO}}_3\right)$.As carbaminohaemoglobinabout $23\%$ of ${\mathrm{CO}}_2$ is transported in combination with haemoglobin and plasma proteins. ${\mathrm{CO}}_2$ reacts directly with amine radicals $\left({\mathrm{NH}}_2\right)$ of haemoglobin to form an unstable compound carbamino-haemoglobin ( $\mathrm{Hb}.{\mathrm{CO}}_2$ ). Sodium bicarbonate acts as buffer of blood.