What is the general consensus on this book? From reviews I've read on amazon it seems to get mixed responses ranging from it was excellent and really helpful to comments that it contained many errors and some of the answers they deemed correct were in fact wrong when students took them to their biology or physiology professors thus causing the book to do more harm than good in the end. Is it really worth it to go through this book then or just read the Examkrackers Biology content review book in the complete study package and do biology passages from the TPR Science Workbook instead? Thanks in advance.