THE PRINCETON REVIEW GETS RESULTS. Get all the prep you need to ace the AP Biology Exam with 2 full-length practice tests, thorough topic reviews, and proven techniques to help you score higher. Inside the Book: All the Practice & Strategies You Need • 2 full-length practice tests with detailed explanations • Expert subject reviews for all test topics • Practice drills at the end of every content review chapter • Step-by-step strategies & techniques for each section of the exam • Updated content chapters and strategies for the new AP Biology exam