Hmm, can't really tell you from experience as I've only just started on year 12 biology. But from what I can see from the syllabus-
Some knowledge on the following would be good:
- Structure and functioning of cells (plant and animal)
- Using a light microscope
- Surface Area:Volume ratio <- super important, as almost every lesson discussions eventually included this
- Evolution/adaptations of some Australian species
- Classification (possibly)
- Various systems (e.g. circulatory, excretory, respiratory etc.)
- Life on early earth/geological timescale of earth <- not specifically mentioned in syllabus, but it is likely that there will be some references to it
- Meiosis and mitosis and their phases
- Osmosis
Apparently they removed the reproduction topic, so don't worry about knowing that o.0 I may have missed some, points though.