Question

What are the forms of $C{O}_2$ that is transported through blood?

• A. Mainly ${HC{O}_3}^{-}$ and blood plasma dissolve
• B. Mainly ${HC{O}_3}^{-}$ and carbominohemoglobin
• C. Carbominohemoglobin and plasma dissolve
• D. Carbominohemoglobin, ${HC{O}_3}^{-}$ and plasma dissolve

Answer 1

The correct option is D

Carbominohemoglobin, ${HC{O}_3}^{-}$ and plasma dissolve

There are three forms of $C{O}_2$ transported through blood.

The main form is bicarbonate, followed by carbominohemoglobin and the least if by plasma dissolve form.

$C{O}_2$, a by-product of cellular respiration, is dissolved in the blood, where it is taken up by red blood cells and converted to carbonic acid by carbonic anhydrase. Most of the carbonic acid then dissociates to bicarbonate and hydrogen ions.