The dissociation curve of haemoglobin is:

Every $100 \ ml$ of oxygenated blood can deliver around $............$ of $O_2$ to the tissues under normal physiological conditions. (in $ml$)

Where is the enzyme $Carbonic \text{ } Anhydrase$ found in high concentration?

Explain the transport of $O_2$ and $CO_2$ between alveoli and tissues with a diagram.

Carbonic anhydrase is found in

What is true about $RBCs$ in humans?