One of my friends got 99.8, aced UMAT, but didn't make it into Med at Syd U. the interview system's meant to be as discriminatory as names from a hat, anyway. I want to do postgrad Med, I've given up hope for undergrad! I'm going to take it easy and just do BSci or BEng at USyd/ UNSW
Yeah, if you don't ace it you'll be screwed, like Advanced Maths; our dux did it a few years ago... and he duxed. Bio classes aren't the cream of the crop, but if you actually study for it really high marks are possible.