OP- if you want to become a scientist, you need to think like a scientist.
Bio, Chem and Physics-- with labs-- are the building blocks of any scientific career. Cover off the building blocks before you specialize. Being a generalist with a solid grounding of the concepts, theory and applications of science will make you a better X… whatever X turns out to be once you get to college.
You might ask the instructor of the microbiology course- but my guess is that any working scientist is going to vote for physics first.