This book is an invaluable guide to undergraduate students in the fields of Biomedical Sciences, Biochemistry, Medicine, Pharmacy, as well as those pursuing advanced diploma courses in Clinical Medicine and Nursing. The book gives a concise introduction to Biochemistry by approaching the discipline from a preclinical perspective. The first two chapters deal with the nature and functions of bio-molecules. Chapter three introduces enzymes and their clinical applications, while chapter four deals with bioenergetics and the role of vitamins in metabolism. The fifth chapter highlights inborn errors of metabolism and organ functions, whereas chapter six is on the biochemical basis of drug action. Chapters seven and eight deal with recombinant DNA technology and bioinformatics, respectively, and applications in research. Relevant examples, questions and illustrations are given within each chapter to enable the learner have a firm grasp of the concepts.