actually, some schools (only a few) require biochemistry- u of minnesota is one, i think maybe michigan? also many schools require at least 6 semester credits (2 courses) in english/literature. one thing i have found in my research is that schools like an applicant to have studied his/her chosen field in depth, whatever it may be. so if you are a biology major, i would definitely recommend genetics, cell biology, physiology, embryology etc. but humanities are also important- one course i wish i would have taken is spanish- some schools, esp. those in urban areas (e.g. new york university) recommend it, but it is not required. remember also that, along with bio, orgo, chemistry, and physics most schools require some lab work as well. good luck!