Fellow Bruin here, graduated 2012 in Biochemistry. Unlike you, I had some personal issues and never went into research. I think research will make you a very strong candidate, so don't rule that out....
Undergrad GPA 3.4 biochemistry (had some difficulties completing my degree, took terms off, was candid about the reasons) GRE 165/163 (95%/86%) in verbal/math, essay 4.5/80% Prereq GPA: 4.0 LoR:...