Tell me about it. Year 11 biology was the biggest bs for me. I think I stopped giving a f. after the second module - I crammed the 4 modules three or four days before the finals and attained ..maybe 74% or something, lol. I hated biology.
The year 12 course is much more different though - it's definitely more interesting - well, depending on what you like.
You'll learn about:
-The human body (different functions, processes), diseases - in which you will go into more depth if you study communications/genetics/biotech as your options
-And the inevitable, a bit about plants in the first module
-Human evolution
There's much more, so I suggest flicking through a textbook. For me, HSC biology is about 1000 times better than preliminary.
If you are planning to rote learn biology - un-plan that plan. You could do it, but you won't be successful at it, because there is just so much content that it's not possible. Also, the questions in biology exams isn't really a memorise-regurgitate process, so rote learning will fail you. The concepts in biology require you to understand them - they are interesting, and the do take time to learn. I don't know what it's like to have tutoring for biology, but I've learnt the course myself, and there will be times when you will want to tear your hair apart because things don't make sense. But if you keep coming and coming back at it - it will, eventually. It's more painful to rote learn biology than it is to learn it - once you understand the concept, you'll remember it forever and even if you don't, a quick re-read will refresh you.
I rote-learned the first module of biology, and it was just so bad. You just end up forgetting what you have memorised. It's a lot worse than preliminary because content is more complex.
I don't think rote-learning will get you a band 6, but probably a 5 or 4.
If you do end up picking biology, or economics - and this applies to all of your other courses as well, learn and understand for the sake of it. Use the time in high school wisely, make something of it. It's just so wasteful, I think, to rote-learn. At least make some attempts.
It will benefit you in the end to not rote learn, because you will be under so much stress from your other subjects that you make not have the motivation from time to time to just keep re-memorising and re-memorising - even your infinite motivation will be stripped from you.