Q. Dissociation of $CO_{2}$ from carbamino haemoglobin takes place when
A) $\rho CO_{2}$ is less in alveoli and $\rho O_{2}$ is high
B) $\rho CO_{2}$ is low and $\rho O_{2}$ is high in alveoli
C) $\rho CO_{2}$ is equal to $\rho O_{2}$ in lungs, i.e., low
D) $\rho CO_{2}$ is equal to $\rho O_{2}$ in tissue, i.e., high
Explanation
$\rho CO_{2}$ is low and $\rho O_{2}$ is high in alveoli. When $\rho CO_{2}$ is high and $\rho O_{2}$ is low as in the tissues, more binding of $CO_{2}$ occurs whereas when the $\rho CO_{2}$ is low and $\rho O_{2}$ is high as in the alveoli, dissociation of $CO_{2}$ from carbamino haemoglobin takes place, i.e., $CO_{2}$ which is bound to haemoglobin from the tissues is delivered to alveoli
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.