LMFAO, are you kidding, do you know what you're talking about? What about Medical Physics, an entire module on medicine...
You don't need to know how frogs breath, how to model natural selection, how plants suck water from the ground, or how some plants survive in the desert, etc..., you don't need biology for medicine at all, all you need for med is good ATAR and UMAT results...
and USyD lists chemistry as the recommended subjects for medicine, the only required subject for undergraduate med entry is standard english, umat and interview...