Although much `CO_(2)` is carried in blood, yet blood does not become acidic, because

Options

A. `CO_(2)` is absorbed by the leucocytes
B. Oxygen combines with haemoglobin to form oxyhaemoglobin
C. `CO_(2)` transport and blood buffers play an important role in it
D. it is continously diffused through the tissues and is not allowes to accumulate.

Answer

C

Explanation

Althorugh much `CO_(2)` is carried in blood, yet blood does not become acidic. It is due to `CO_(2)` tranport and buffering action of blood. The main buffer present in the blood is bicarbonate (which is formed during `CO_(2)` transport in the blood). Bicarbonate exist in equilibrium with carbonic acid which in trun can be coverted to `CO_(2)` and water.
`H_(2)O + CO_(2) hArr H_(2)CO_(3) hArr H^(+) + HCO_(3)^(-)`