This updated edition addresses the examined units of the CCEA AS level Life and Health Sciences specification (including the recently-proposed revisions). It covers both the Single and Double Award courses, through the study of the following units:• AS 2: Human Body Systems• AS 3: Aspects of Physical Chemistry in Industrial Processes• AS 5: Material ScienceThe full-colour, illustrated chapters clearly explain the theory for the course, and are supported by worked examples, tips, examination-style questions and answers.The authors are all experienced science teachers and examiners and the book has been through a meticulous quality assurance process prior to publication.Contents:Unit AS 2: Human Body Systems1 Cardiovascular System2 Respiratory System 3 Respiration4 Homeostatic Mechanisms and How These Are Monitored5 Nutrition and Physical Exercise in Maintaining Good HealthUnit AS 3: Aspects of Physical Chemistry in Industrial Processes6 Chemical Calculations7 Volumetric Analysis 8 Energetics9 Kinetics 10 Equilibrium11 Industrial Processes, Infrastructure and Environmental ConsequencesUnit AS 5: Material Science12 Material Properties13 Categorising Materials and Microscopic Structure14 Alloys, Metal Working and Biomaterials15 Smart Materials, Nanomaterials and Industrial Considerations16 Semiconductors Answers