The Biological Chemistry of the Elements

Book excerpt: The study of the chemistry of living processes has traditionally centered on the behavior of organic compounds in water - together they account for 99% of the matter in living systems. However, we also know that about twenty `inorganic' elements are also essential for life, and that they are found in similar amounts in most living systems. The authors' objective in this book is to examine and explain the importance of these elements by `bringing inorganic chemistry to life'. The authors commence with a survey of the chemical and physical factors controlling the elements of life; the essential functions of individual inorganic elements are then described in detail. A final section consolidates a major theme of the book - the cooperative interaction of elements in living systems. These chapters examine the relationships between chemical activity and morphology and the effect that changes in the availability of elements have on life - not only in providing evolutionary pressures but also in the context of the use of medicines and the spread of pollutants.