Biochemistry is now in its updated third edition! Based on the second edition of Biochemistry, a third edition has been streamlined to focus the fundamental principles of biochemistry and their implications in clinical medicine without overloading the students rather than memorizing dry facts and formulae. Certain topics have been revised and updated, the notable ones among them are: - Lipoprotein, - Structure-function relationship of proteins, - Diagnostic use of enzymes, - Protein targeting, - Acid-base balance and Tumour markers. *New tables and figures have been included. *A new chapter on The Immune System has been added. *A revised extensive index has been given. *New MCQs have been added. *Covers the fundamentals of biochemistry in a relevant, interesting manner. *Presents over 1000 interactive review practice questions comprising multiple choice questions (MCQs), short answer questions (SAQs), long answer questions (LAQs), short notes, clinical cases followed by a list of questions, which provide readers an excellent opportunity of self-test before the examination to ensure they understand and can use all the concepts introduced in the chapter. *Chapter outline allows students to preview the chapter content. *Chapter introduction and review of the contents set goals for understanding and re-emphasize essential concepts from each chapter. * Coloured clinical boxes highlight key concepts by direct application to real-world scenarios. Section 1: Structure and Function of the Cell and Bio-molecules, 1. The Cell, 2. Carbohydrate Chemistry, 3. Chemistry of Lipid, 4. Chemistry of Proteins, 5. Plasma Proteins and Immunoglobulins, 6. Enzymes, 7. Vitamins, 8. Chemistry of Haemoglobin, 9. Chemistry of Nucleic Acid, Section 2: Energy Metabolism, Nutrition and Metabolism of Bio-molecules, 10. Bioenergetics and Biological Oxidation, 11. Human Nutrition, 12. Carbohydrate Metabolism, 13. Lipid Metabolism, 14. Protein Metabolism, 15. Integration of Metabolism and Metabolism in Starvation, 16. Water Metabolism, 17. Mineral Metabolism, 18. Haemoglobin Metabolism, 19. Nucleic Acid Metabolism, Section 3: Biochemistry of Cellular Communication, 20. Mechanism of Hormone Action, 21. Neurotransmitters, Section 4: Molecular Biology, 22. Replication, Transcription and Translation, 23. Regulation of Gene Expression and Mutation, 24. Genetic Engineering, Section 5: Clinical Biochemistry, 25. Acid-base Balance, 26. Organ Function Tests, 27. Coronary Heart Disease (CHD), Cardiac Markers and Lipid Profile, 28. Radioisotopes in Medicines, Section 6: Health, Disease and Environment, 29. Free Radicals in Health Disease and Antioxidants, 30. Metabolism of Xenobiotics (Detoxification), 31. Cancer, 32. Acquired Immunodeficiency Syndrome (AIDS), 33. Environment and Health, 34. The Immune System, 35. Biomedical Waste Management, Section 7: Biochemistry of the Tissue, 36. Connective Tissue, 37. Muscle, Section 8: Basic Analytical Techniques in Biochemistry, 38. Chromatography, Electrophoresis, Photometry and Radioimmunoassay.