Med Schools that do not require prerequisites

There are certain med schools that do not have prereq courses such as UVA,NYU, Stanford, USC, Tulane etc... However they do recommend that you take them. I know you all will say recommended=required. In addition, I know that you have to show comment to in the subject area as well. Can that be done via the MCAT? Does not having all the prereqs for schools without course requirements prevent you from getting in?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums