Fundamentals of Biochemistry: Life at the Molecular Level 3rd Edition (Third Ed.) 3e By Donald Voet, Judith G. Voet and Charlotte W. Pratt 2008

The book is hole punched so you can take certain chapters to school. I found it very helpful to only take the chapters I was studying to school instead of the entire textbook. The book is a little worn from taking it to school, some pages are bent a little.