Biochemical reactions, which facilitate metabolic and/or photosynthetic changes in each life form through the actions of enzymes, make all life possible. This insightful volume considers the various types, causes, and results of different reactions that operate at the cellular level and beyond to sustain biological activity. Readers will explore the early discoveries of the first biochemists and trace these developments and their impact to the latest advancements in and applications of biochemistry, ultimately leading to a deeper understanding of life on Earth.