Biochemistry studies the chemical reactions related to preservation of vitality and a healthy life, and it is one of the disciplines with the largest area of practice in medicine. The macro molecules and micro molecules in our daily diet are also the structure and function molecules of cells. According to current scientific understanding, preservation of a healthy life and understanding and treating diseases require an extensive biochemistry knowledge. It is for this reason that biochemistry concerns all professional disciplines related to health and not just medical education. This book aims to explain basic theoretical and clinical knowledge on biochemistry in an understandable form. Beside the class practises of our students, the book contains our abstracts which our students use to shortly go over the subjects they learned.