Theoretical Systems in Biology: Hierarchical and Functional Integration, Volume I: Molecules and Cells covers the molecular and cellular aspects of classical biology. The book is comprised of 12 chapters, which are organized into three parts. Part I covers topics relating to the materials and methods in biological dynamics, such as macromolecular components and interactions, chemistry of cells, and biological dynamics. Part II deals with the molecular organization of living matter; this part covers the organization of biological systems and the relationship between evolution and physiology. Part III talks about issues concerning the cellular organization of living matter, such as regulation of cell function, cell growth, and cell division. The book will be of great use to biologists concerned with the theoretical systems in biology, specifically in cells and molecules.