I did the work to memorize a good bit of this info and it didn't pay off beyond perhaps one simple question. but that is only on for questions that popped up for me. I would have been better off to know a little more about repro than the endocrin system but I completely agree that the next guy might as well know more about ecology than repro. Even with 40 questions I think it is much harder to guess at what areas are going to be well covered on the Bio section. Both chemistries were exactly what I expected and the bio just seemed to be all over the board. I think it could have just as easily played to my strengths although I feel it did not. In fact, 4 or 5 questions in I was wondering if I would ever see a question that seemed to cover something I knew anything about. I used Topscore and Kaplan. If I were retaking and I'm not, I'd throw in an additional source for Bio. Having said all of that, I'm out of school and never took any bio when I was in college (Ok, I did have biochem I). I'm only 2 biology classes into my 12 hours of minimum reqs so that probably has just as much to do with my 18 on Bio as the study materials.