For Bio 1A03, they didnt let me take it during first year because I was in Soc Sci Faculty. So, I did it in the summer school. After that, I probably would've gotten into PNB B.Sc program but I only had 7 Life Sci. courses. You need 8 in total.
See if you can call them up to see if they can give u a waiver for Bio 1A03 for your first year.
I am not sure about Chem 1a03... If you can take that or not.
You will probably find out when you pick your courses, if it comes as your prerequisite being "failed" then contact the department and ask them to just give u a waiver (permission for that course) for that course.
Just make sure you have the courses mentioned above. and total of 8 Life Sci courses. plus good average
Good luck!