Biological Science covers both core and option material for AS Level and A Level. This is the third edition of the highly successful book, Biological Science. The text has been revised and updated to provide comprehensive coverage of the latest syllabuses. New material has been added in the following areas: human health and disease, microbiology and biotechnology, and the applications of genetics. Questions and practical work permeate the text and useful appendices are included covering biological chemistry, biological techniques and statistics. Biological Science is available as two soft cover volumes and as a combined volume hardback.