Biochemistry studies the processes that occur within an organism. It has evolved as a field over the past few decades and has successfully been able to explain the complexities of life. It studies structures and functions of biological macromolecules. This book traces the progress of this field and highlights some of its key concepts and applications. For all the readers who are interested in biochemistry, the case studies included herein will serve as an excellent guide to develop a comprehensive understanding. The aim of this book is to present researches that have transformed this discipline and aided its advancement.