IB Biology is very intensive in vocab and procedures. Firstly, you need to be able to memorise the vocabulary - there is no way around that. Whilst studying, I found that the most efficient way to do this is by noting down any unfamiliar terms during class, then looking these up at home. I would then revise all my terms by making and playing with my vocabulary Quizlet. Please notice that I got a little lazy with this project near IB exams, so it is missing some content (especially in chapter 6, 9, and 11).