Now, we also have a bunch of water molecules. And these water molecules basically describe that aqueous environment. So notice we have an Aqueous environment on the outside and on the inside on top of that, because this portion is wider than this portion of that protein. So Because We Have A Larger Opening about ten angstroms on the inside side than on the outside side, where it's about three angstroms. So this internal cavity will have enough space to actually fit those same water molecules that exist on the inside cytoplasmic side of that cell. Now, why is that important?