Need Help Desperately! With pre-PN Science challnege

[downsouthlaff, LPN]

Ok, well I have fulfilled all the Pre reqs for an PN program beginning July 31st and this is the program I am set on attending. The ONLY Pre req ive yet to fulfill is Allied Health Science at the vo tech. I have the choice of either taking the class or challenging the classe's final aka Science Challenge. My only option as its looking now is to Challnege. The only problem is im feeling a little lost on what to study and how deep this scieince goes. I don't know where to begin. This IS NOT A TEAS test. I just don't know how to prepare because I don't have any kind of formal study guide. Anybody who became an LPN at a vo tech challenged a Science course and can point me in the right direction? Thanks