yep at our school you could definantely do any of the HSC sciences without having to do the others to compliment it and help. The chemistry in bio is small like remembering a sugar molecule and...well thats about it lol nah theres a little bit but its very easy without chemLodgic said:You should be right. From my experience, only about 5% of HSC biology could be chemistry aided. And if chemistry is involved, it's usually very simple chemistry.