Hi William, I was a biology/chemistry major in undergrad - core classes for most medical related professions (e.g. physician, dentist, pharmacist) - so the classes are mostly science based (e.g. general biology, chemistry, organic chem, physics, biochem, microbiology), but you do have to take math classes as well (possibly Calculus I). Also, most schools really want a well rounded student, so holding leadership positions on campus, or active in the community is a plus as well. Good luck!!