If you are not interested in medical then after 12th then you can go for Graduation programmes. Here are some of the field in graduation for PCB students as per your interest you can choose.

Some of the professional Graduation programmes are

1. Biochemist
2. Toxicologist
3. Marine Biologists
4. Food Technologists
5. Pharmacologist

Biology + Physics Mainly should have knowledge

1. Oceanographer
2. Neuro Engineers
3. Forensics Analyzer
4. Biophysicist
5. Radiologist

Or You can go for simple graduation programme as per your interest like B.Sc (Physics, Chemistry, B.Sc Zoology) etc.

Good Luck!