The World of the Cell continues the tradition of previous editions widely praised for covering some of the most difficult concepts ¿ bioenergetics, metabolism, enzyme kinetics, thermodynamics, membrane transport, cell signaling, regulatory mechanisms, transcription and translation, signal transduction, and DNA replication and recombination ¿ at the right level. A Preview of the Cell, The Chemistry of the Cell, The Macromolecules of the Cell, Cells and Organelles, Bioenergetics: The Flow of Energy in the Cell, Enzymes: The Catalysts of the Cell, Membranes: Their Structure, Function, and Chemistry, Transport Across Membranes: Overcoming the Permeability Barrier, Chemotrophic Energy Metabolism: Glycolysis and Fermentation, Chemotrophic Energy Metabolism: Aerobic Respiration, Phototrophic Energy Metabolism: Photosynthesis, Intracellular Compartments: The Endoplasmic Reticulum, Golgi Complex, Endosomes, Lysosomes, and Peroxisomes, Signal Transduction Mechanisms: I. Electrical Signals in Nerve Cells, Signal Transduction Mechanisms: II. Messengers and Receptors, Cytoskeletal Systems, Cellular Movement: Motility and Contractility, Beyond the Cell: Extracellular Structures, Cell Adhesion, and Cell Junctions, The Structural Basis of Cellular Information: DNA, Chromosomes, and the Nucleus, The Cell Cycle: DNA Replication, Mitosis, and Cancer, Sexual Reproduction: Meiosis and Genetic Recombination, Gene Expression: I. The Genetic Code and Transcription, Gen