PREMIUM PRACTICE FOR A PERFECT 5—WITH THE MOST PRACTICE ON THE MARKET! Ace the newly-digital AP Biology Exam with The Princeton Review's comprehensive study guide. Includes 6 full-length practice exams (more than any other major competitor), timed online practice, and thorough content reviews. Techniques That Actually Work Tried-and-true strategies to help you avoid traps and beat the test Tips for pacing yourself and guessing logically Essential tactics to help you work smarter, not harder Everything You Need for a High Score Updated to address the new digital exam Comprehensive content review for all test topics Online digital flashcards to review core content Study plans, a handy list of key terms and concepts, and more via your online Student Tools Premium Practice for AP Excellence 6 full-length practice tests (3 in the book, 3 online) with detailed answer explanations Online tests provided as both digital versions (with timer option to simulate exam experience) online, and as downloadable PDFs (with interactive elements mimicking the exam interface) Practice drills in each content review chapter, plus end-of-chapter key term lists