Master in biology - campus and infos

I'm currently in bachelor in biochemistry (BCB) and maybe want to do a master in biology (which exact major idk yet), my first question is can I do this ? Because it's not the same department so maybe it's more complicated than just doing the bcb master.

I'm also currently looking for a new flat near Hönggerberg, but idk if there's like a lot of lectures at the Zentrum or is it mainly at Hönggerberg? Because this would influence my research.