"Molecular Biology" is a textbook intended for M.Sc. and B.Sc. students of Molecular Biology, Genetics, Pharmacy, Biotechnology, Medicine, Biochemistry, Botany and Zoology of all universities. The book has 41 chapters covering Molecular Genetics, Cell Biology and Genetics spreading over 900 pages. It also includes several appendices and glossaries. Most important chapters include Chemistry of Life, Tools and Techniques in Molecular Biology, Metabolism, Plasma Membrane, Golgi Apparatus, Mitochondria, Chloroplasts, Nucleus etc. Advanced topics like Genomics, Human Molecular Genetics, Biotechnology, Immunology and Cancer Genetics are discussed in detail.