Question

Although much `CO_(2)` is carried in blood, yet blood does not become acidic, because
A. it is a absorbed by the ieucocytes
B. blood buffers play an important role in `CO_(2)` transport
C. it combines with water to form `H_(2)CO_(3)` which is neutrailised by `Na_(2)CO_(3)`
D. it is continuously diffused through tissues and is not allowed to accumulate

Answer 1

Correct Answer - B
Buffer of the blood is sodium bicarbonate which polay an important role in `cO_(2)` tansprot during `CO_(2)` tansprotation , carbonic acid dissociated in to `H^(2)` and `HCO_(3)^(-)` (bicarbonate ions) .This bicarbonate combines with sodium forming sodium bicarbonate .Thus concentration of crbonic acid does not increase in blood due to the presence of souium and thus blood does not become acidic .About `70^(@)` of `CO_(2)` released during cellular respiration is tranported by blood in the form of sodium bicarbonate in plasma.