But the blood plasma, which consists predominantly of water molecules, is polar. And so the CO2 in its CO2 nonpolar form cannot actually dissolve inside the red blood plasma. Inside the blood plasma. And so what happens is the CO2 tramples into the red blood cell. Now, once inside the red blood cell, we have the same problem again because the cytoplasm of the red blood cell consists predominantly of water. So just like the blood plasma, the cytoplasm inside the red blood cell is also polar.