The present book, Introduction to Biotechnology, is written strictly according to the syllabus of B.Tech.-Ist Year of Kurukshetra University, Kurukshetra. This book is of immense help to the students pursuing undergraduate courses in Biological Sciences in general and those who are studying B.Tech. Biotechnology or B.Sc. Biotechnology in particular as in it diverse basic concepts of Life science and Biotechnology have been explained in simple, easy to understand language.