This textbook on Biomolecules and Cell Biology covers fundamental concepts in Botany and is designed for Bihar B.SC students in their second semester. It delves into the molecular and cellular structures of living organisms, exploring topics such as carbohydrates, lipids, proteins, enzymes, and cell organelles. The book provides a comprehensive overview of the intricate mechanisms that drive cellular processes and prepares students for advanced studies in the field of Biology. With clear explanations and engaging illustrations, this book is an essential resource for any aspiring biologist.