BIO-ORGANIC CHEMISTRY describes the structure, interactions, and reactions of organic compounds of biological significance at the molecular level. The book represents the interface of biochemistry with organic chemistry. The major focus is on fundamentals of bioorganic chemistry where each chapter gives an in-depth knowledge about the topic, besides covering the chemical/biochemical reactions with special emphasis on mechanistic aspects. General biosynthetic reactions have been outlined and compared with corresponding organic reactions. The detailed information on the chemistry of Enzymes is given in one chapter while the other chapter describes the details of mechanism of enzyme action. The reactions catalysed by enzymes and coenzymes respectively have been described in detail emphasizing on mechanism of these reactions. The chapter on Enzyme Models has been entirely focused on different aspects and types of enzyme models and their applications in chemical, pharmaceutical, food, biochemical and environmental industries. The biotechnological applications of enzymes have been described in the last chapter focusing on immobilized enzyme technology for various industrial uses.