I am not just trying to flatter you by saying that I am confident you will do a great job on Monday. You have learned an enormous amount of material in a very short time! There are three things you should do to prepare for the AP exam: sleep, sleep and sleep. Your brain needs to be fully functional to be able to figure out what the heck the questions are even asking :) Your most important strategy is to stay calm and confident. Read the questions carefully and make sure you know what they are asking.
Some resources: (see yesterday for nervous system animations)
More about the science behind how certain drugs work:
http://teens.drugabuse.gov/mom/index.php
Immune System:
Harvard animation of white blood cell:
http://www.schooltube.com/video/298f6e0ddd0a626bc784/The-Inner-Life-of-a-Cell-Explained-HQ
http://www.niaid.nih.gov/topics/immunesystem/Pages/default.aspx