These cgp revision question cards are perfect for testing your grade 9-1 edexcel igcse biology knowledge. There are 96 cards in the pack, covering every key topic. Each one starts off with quick questions to warm you up, followed by harder questions to get your brain into top gear. Flip the card over and you'll find full answers to each question, carefully written to help you understand everything you need to know. Along the way, we've packed in plenty of diagrams and expert revision tips, and there are even questions on experimental skills.