If you're more of a Biologist take my advice and do Cell, Organisms and Physiology in the first year (assuming you get a place, that is). I did Cells, Physiology and Chemistry and borked my Chem No-one tells that that when you go to uni Chemistry suddenly turns into A-Level maths...
Which colleges are you thinking of applying to (which is, of course, a far more important question than which course )?