About Life

This book uses modern biological knowledge to tackle the question of what distinguishes living organisms from the non-living world. The authors first draw on recent advances in cell and molecular biology to develop an account of the living state that applies to all organisms (and only to organisms). This account is then used to explore questions about evolution, the origin of life, and the possibility of extraterrestrial life. The authors also consider human evolution, intelligence, and the extent to which our species can be regarded as biologically unique. About Life makes modern cell biology comprehensible to the non-specialist. Non-technical language is used throughout and all scientific terms are clearly explained when they are introduced. The novel approach taken by this book to issues in biology will interest both the general reader as well as students and specialists in the field.

Makes modern cell biology comprehensible to the non-specialist Integrates cell biology with origin-of-life theories Adopts a distinctive position in respect of extraterrestrial life and human uniqueness

Inhalt
Introduction.- Ingredients of the Simplest Cells (Prokaryotes and the Sizes of their Contents).- Bigger Cells (Eukaryotic Cells and their Contents).- Hives of Industry (A Survey of Intermediary Metabolism).- Delights of Transport (Mechanisms by which Cellular Contents are Moved around).- As if Standing Still (Cellular Homeostasis and Regulatory Processes).- Internal State and Gene Expression (Transcription and its Control).- Sustaining and Changing the Internal State (The Interrelationship between Gene Expression and the Cell's Current Composition and Functional State).- Responding to the Environment (Signal Processing and its Relationship to Cell Structure, Metabolism and Gene Expression).- The Living State (A general characterization of 'life').- Stability and Change in DNA (Why DNA is highly stable and a Survey of the Mechanisms by which it can Change).- The Spice of Life (Variety, Habitats, Natural Selection, Symbiosis, Ecosystems).- Curriculum Vitae (An Outline History of Life on Earth).- The Origin of Life (Major Ideas and Unanswered Questions).- Other Worlds (Ideas about Extraterrestrial Life, including a Critique of the Assumptions behind the 'Drake Equation' and the SETI Project).- Intelligent Behaviour and Brains (The Meaning of 'Intelligence').- Human Intelligence (Human Evolution and the Question of Human Uniqueness).- Cells, Brains and Computers: towards a Characterisation of Mind.- Glossary.- Bibliography.