Haemoglobin is a red-colored,iron-containing pigment present in $RBCs$. $O_2$ binds with it in a reversible manner to form..........

$I.$ Increased partial pressure of $O_{2}$
$II.$ Increased partial pressure of $CO_{2}$
$III.$ Increased partial pressure of $H^{+}$
$IV.$ Decreased partial pressure of $O_{2}$
All the above situations favour the dissociation of oxyhaemoglobin except:

Which of the following factors affect the binding of oxygen with hemoglobin?

Oxygen is transported to every cell of the body through:

What is the amount of oxygen carried by $1 \, g$ of hemoglobin?

Although much carbon dioxide is carried in blood,yet blood does not become acidic because