As far as having Cs in classes, I am a bio major so I have over 21 credit of physical science courses (in lectures), and only one of those classes would be required as a pre-req. I have plenty of As & Bs, but a few Cs also. Considering I only need one extra physical science course I assumed they would count one of my As or Bs? But maybe having a C in some of those made me not meet the requirement? I have no idea, but that's the best explanation I could think of. I have either As or Bs in Chemistry, Organic Chem, Physics & also Biochem(which may not count) plus all of my physical science labs which includes at least 6 credits, so I thought that would be sufficient. I have no other pre-reqs below a B+.