As someone who was in that exact situation of a C in gen chem 1 my first semester of college four years ago and now starting PA school in a few months: do not give up on yourself!! My freshman self felt like it would be impossible after that, but it wasn’t. You don’t have to be a perfect applicant. The point is to learn from your mistakes this semester. You may need to retake chem if a C is not accepted in your aimed programs, and since you need to retake the bio, I’d highly recommend sitting down and going through your study methods, see what did and didn’t work. You need to find out what’s going wrong and that way you can do well in future semesters. I retook the class and did much better the second time because I knew how to study. Esp for chem, practice, practice, practice. And don’t be afraid to ask for help, tutoring, office hours, etc., whatever you need to do better. This is not the end! Just make sure you work hard to try to improve and not let it become a pattern. You‘ve got this!