Carbonic anhydrase is found in .......... .

Binding of $O_{2}$ with haemoglobin is primarily dependent upon:
$I.$ Partial pressure of $O_{2}$
$II.$ Partial pressure of $CO_{2}$
$III.$ Hydrogen ion concentration
$IV.$ Temperature
Choose the correct option.

$CO_2$ is carried by haemoglobin as carbamino haemoglobin. This binding of $CO_2$ with $Hb$ is related to the partial pressure of .........

In blood,$CO_2$ is mainly transported through

What happens during the toxic effect of carbon monoxide $(CO)$?

In what form is the $CO_2$ released from body tissues into the blood transported?