carbon dioxide is transported via blood to lungs mostly

Options

A. As carbaminohaemoglobin and as carbonic acid
B. In the form of carbonic acid only
C. In combination with hemoglobin only
D. Dissolved in blood plasma

Answer

A

Explanation

Carbon dioxide is transported via the blood to lungs by:
* About `7%` of carbon dioxide is dissolved in plasma.
* About `20-25%` of carbon dioxide is by binding with hemoglobin to form carboxyhemoglobin.