And so, because we have these two separate and opposite charges, this is the dipolar form of the amino acid, the Zvitarion form. And because the majority of the cells and the solutions inside our body have a PH of around four, the majority of the amino acids exist in this Zvitor ion form. Now, the next question is what exactly happens to our amino acid, to the Zvitor ion, if we decrease the PH, make it more acidic, or increase the PH, make it more basic? Well, it turns out, in various acidic solutions, if the PH of our solution is, let's say, one, then because we have so many H ions in our solution, this here will be protonated. And so our amino acid will exist in the following form. It will have an overall charge of positive one.