The curriculum is being drawn up, and the subject will be introduced for second year students too, so it helps those who want to gain lateral entry into engineering. This will include the study of cells and blood flow, and there is also a need to understand the nervous system while working with artificial neural networks. 

The book contains the fundamental biological concepts required for the engineering graduates as per the AICTE recommendation and many other universities where the biology curriculum is compulsory during the first year of their studies. Though it has been prepared as per AICTE recommendation, the book would be a good resource for those who want a sense of biology. The book encompasses the vast area of biological science, and these topics have been prepared from the leading reference books of the respective topic. The book aims to provide a reader with comprehensive information on the basic biological concepts from the beginning of evolution to advanced topics. The chapters are presented in a systemic way where the readers are first introduced to the need for biology in the present era. Then the following chapters discuss events that led to the origin of life, cell and their contents, biomolecules of cells, metabolic activities in cells, hereditary materials of cells, the microbial world around us and our body’s defense system for protecting from disease-causing microbes. Each chapter has been presented more immaculately with a simpler illustration that makes the reader understand the concepts. A set of practice questions for each chapter has been provided at the end of the textbook. The present book does not exhaust the biological concepts, and for many more advanced concepts, it is necessary to refer to specialized books for the respective topics. It took nearly one and half years for us to shape the book and bring it to the present form. The request for the book came from Khanna Publishers, and they were prompt in completing different formalities to make it presentable. We hope the book will benefit engineering graduates to pass biology and have a strong foundation on biological concepts. And we are sure that to make our world Greener and cleaner, understanding biology is paramount and will lead to a sustainable future.