At which level does the following reaction occur?
$H^+ + HCO_3^- \rightarrow H_2CO_3 \rightarrow H_2O + CO_2$

Select the correct option for the transport of $O_2$. (Plasma : RBCs)

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.

Identify the wrong statement with reference to transport of oxygen.

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

What is true about $RBCs$ in humans?