Checked by AQA examiners, this is a revised and updated edition of Collins Student Support Materials for AQA AS Biology. It fully supports the new 2008 AQA Biology specification for Unit 2: The Variety of Living Organisms. All the knowledge you need is summarised so you can use it as a study guide or revision guide to ensure success in your exam.

This book provides a clear and easy path to learning all the essential information in the new 2008 AQA Biology AS specification for Unit 2: The Variety of Living Organisms. It is the perfect way to support your studies and an excellent revision guide. It includes:

-How Science Works guidance to help tackle this new key focus in the specification

-Examiner's Notes boxes to give advice on exam technique and warn of common misconceptions

-Essential Notes boxes to highlight crucial information

-Definition boxes and a comprehensive glossary to help memorise essential terminology

-Practice questions to help prepare for exams

-An index for quick reference