The principle goal of this book is to give the undergraduates, graduates and those who explore the science of cell, the basic concepts of the cell, an introduction about plant and animal cell, structure and function of different cellular organelles, different stages of the life of cell, types of cell division such as mitosis and meiosis and cell aging and cell death. I hope this book will give you the basic and comprehensive knowledge and understanding of cell biology. It clearly describes the structure of animal and plant cells, structure and function of organelles and molecular components of a cell. While the book can be a self learning text book for many it is truly worthy to have in one’s book shelf. There is no greater wealth than wisdom.