Collins A2 Biology for AQA is the ideal resource to support you through the 2008 AQA GCE course. It has been developed with the help of AQA examiners to ensure a perfect match to the 2008 specification and provides everything you need to succeed in your exam. This book covers AQA Biology A2 units: Unit 4 - Populations and Environment Unit 5 - Control in Cells and in Organisms The book includes the following features: - How Science Works feature boxes and assignments - Real world science in context at the start of every chapter - Questions throughout the text, with answers provided in the back of the book - Key fact summaries throughout the text - Stretch and challenge boxes to push the most able students - Exam-style questions at the end of every chapter - Practice synoptic questions The website includes the following additional support material: - Mark schemes for exam-style questions from the book - Sample student answers to exam-style questions at 2 levels with examiner comments to show students how to achieve a higher grade - Guidance for PSAs to help students to achieve the best grades in their practical assessments - Mathematical and examination technique guidance to ensure that students know how to best prepare for and handle their exams. Also available from Collins: AS Biology for AQA, covering AQA Biology AS units: Unit 1 - Biology and Disease Unit 2 - The Variety of Living Organisms