Riproot, thats just rude!lol fuck off.
Killamatt, i'll tell you what to study.
make sure you cover...the properties of extracted blood. there's a question where you have to list at least 5 extracted products and their uses. Also, make sure you know everything about the Red Kangaroo and the Frilled Neck Lizard (endo/ecto shit), you'll need to draw up a comprehensive table. Also, study things like the negative feedback response (with examples, i.e sweating etc), aldosterone/adh, kidney dialysis. thats just MAB. for BOL; it focused mainly on Mendel and like two or three short answer questions involving punnett squares (thankfully no pedigree trees!!!), comparative embryology and biogeography. For SFBH; study in depth 2 case studies of vaccination programs, dates, statistics, how vaccinations work etc. If you do this, you should easily get 80%. for you option, well i dunno.
good luck!
remember: the hsc is a team effort!