If I don't get in I'll take some upper level science classes. I know this won't up my gpa as much as retaking (I may retake one) but I think it looks better. I've spoken to several advisers as well as the dean of admissions to my local school, William Carey. They are very impressed by you doing well in an upper level class, much more so than you retaking Bio 100 and getting an A. Give the admissions committee more credit. They will look into your application more than just the numbers, they'll want to see what classes you took. This is why I'm taking classes like Immunology and Parasitology this upcoming fall.
Iceman, do you live in the Bible belt? I'm from Louisiana and was just wondering. You will have a much higher chance of getting in if you apply to schools interested in regional based students. If you're interested at all in WCU COM I could hook you up with some contacts in the school, let me know.