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.

Under normal conditions,what amount of $O_{2}$ is delivered to the tissues by $100\; mL$ of oxygenated blood (in $; mL$)?

Analogy type question:
$(1)$ Carbonic anhydrase : High concentration in $RBC$ :: In blood plasma : .......

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

The movement of chloride ions into erythrocytes from the plasma to maintain osmotic balance during transport of gases is known as

Given below are two statements:
Statement $I$: The relationship between $HbO_2$ saturation and oxygen tension $(pO_2)$ is called the oxygen-dissociation curve.
Statement $II$: The oxygen dissociation curve shifts towards the right due to a decrease in $ppCO_2$ and a decrease in temperature.
In the light of the above statements,choose the most appropriate answer from the options given below.