Got A's/A-'s in the organic chem classes but got a C- (the only C on the transcript) in my second quarter of organic chem lab. My chem lab classes in general have been pretty weak (B's/B-'s i think). I'm a bioengineer with a 3.513 and a 35 on the mcat. Is C- even passing? and should i retake or forget about it?