And we also have that domain that actually binds that ATP molecule that is used to make that carbon dioxide much more active. Now, this process actually involves three individual steps, or we can call it many steps. And so these are the steps that I've listed on the board. So let's begin with step number one. Now, we know that inside our fluids of our body, we don't simply have a CO2 molecule dissolved because CO2 by itself is a very non polar molecule and so it cannot simply dissolve in our blood. And we have an enzyme called Carbonic and Hydrate that is basically used to transform the CO2 into bicarbonate ions.