It depends heavily on the specific area of biology. I have friends making $35-40k in the LA area doing pharamaceutalogical research, and others making $250k+/year (also in the LA area) in some specialized areas of biochemical research that I don't understand enough to describe.
Also, if you get closer to product, you get paid a lot more. I know a lot of people who work in pharma and all of them make $80-150k (in the bay area); even admin/support people, and many levels of management, compliance, and other crap.