“Biology for Engineers” is a book specially written for the students of engineering streams of various discipline to make them understand and appreciate the link between biological principles and engineering technology. The book is organized into four chapters - Chapter 1 discusses the significance of molecules and elements of life; Chapter 2 discusses how the living cell and the biological system in this universe work on thermodynamics principles; Chapter 3 discusses the plasma membrane and its universality across the living system and Chapter 4 gives its reader the knowledge of membrane electrical potential that has been used for devising objects that will facilitate heart beat, hearing aid, bionic eye for visually impaired. Different examples of application of anatomical features in engineering technology and how certain anatomical features have been implemented in developing devices in the engineering technology are discussed in the book.