Firstly, choosing the option based on just comparison of the courses is highly NOT recommended. This should be avoided since both fields are good on their own accord. The important thing is what you are good at, and that is much more important.
Since you have taken PCB and if you interest in Biology, Chemistry, then definitely BioChemistry is good field for you. You can also explore MicroBiology, BioTechnology, Pharmacy, Clinical Research fields which are very promising.
To be on the safer side, I would strongly suggest you to take the Ideal Career Test from Caree