Unlock your full potential with these revision guides which focus on the key content and skills you need to know. With My Revision Notes for AQA AS Biology you can:.; Take control of your revision: plan and focus on the areas you need to revise with content summaries and commentary from author Mike Boyle.; Show you fully understand key topics by using the examples to add depth to your knowledge of biological issues and processes.; Apply biological terms accurately with the help of definitions and key words on all topics.; Improve your skills to tackle exam questions, with self-testing and exam.