The book is devoted to kinetics and thermodynamics of the processes with participation of some biological compounds and their synthetic analogues. Aspects of their acting as model enzymes, molecular receptors, photo sensitizers, pharmocophores, and biopharmaceutical compounds are under consideration. Quantitative characteristics of transfer of cations, anions and small organic molecules, fermentative catalysis, diffusion of the drug molecular through biological membranes are found. Mechanisms of the processes are discussed. Biological activity of studied compounds is evaluated. Bio-damages of materials as well as adhesions of microorganisms on materials surface are investigated.