I use the lectures and the resources that are made available to us as a guide to how much detail is needed. At this stage you should be thinking about grasping the anatomy and physiology of things. Specific names of compounds and things like that are not generally so important. In terms of conditions, I’d say keep your focus on symptoms and causes, and treatments only very briefly. Working out the depth of knowledge that’s required is honestly a trial and error thing – try and use your closing PBL sessions to gage whether you chose the right level.