You didn't mentioned name of any Institute in your question. The fee structure if every college is different be it college fees or hostel. The fees of Bsc in microbiology could vary between 20k to 3lakhs depending upon the Institute. So it is hard to tell you any general fee structure. But if you do BsC from any government college your over all fee including hostel wouldn't cost you more than 50-60k.

Thank you.