functions

hey all, this is my first time posting here, and i could really use some help! my friends and i are fifteen, and we have to do a science research project next year. we'll be getting a university professor for a mentor, but we're not really sure of our boundaries. We would really like to do a project on microbiology; on immunity and vaccines and the like, but our teacher tells us it's too advanced. Recently, we thought of doing something oncology related, but we're not really sure what field we can go into. Will chemo be too difficult to research on for us? Would really appreciate any ideas/advice! Thank you!