Fully revised and updated, this fourth edition is the perfect guide for those studying biology, either at school or university. Containing many new entries, and now with biographical entries on key scientists, it provides comprehensive coverage of biology, biophysics, and biochemistry. -- Over 4,000 clear and concise entries -- New entries include heat-shock protein, zinc finger, integrated pest management, and oxidative burst -- Feature articles on important topics, such as genetically modified organisms -- Chronologies chart the discoveries in the main fields of the subject