Contents:

01.A Preview of the Cell 1

02.The Chemistry of the Cell 18

03.The Macromolecules of the Cell 41

04.Cells and Organells 75

05.Bioenergetics: The Flow of Energy in the Cell 106

06.Enzymes: The Catalysts of Life 129

07.Membranes: Their Structure, Function, and Chemistry 156

08.Transport Across Membranes: Overcoming the Permeability Barrier 194
09.Chemotrophic Energy Metabolism: Glycolysis and Fermentation 224

10.Chemotrophic Energy Metabolism: Aerobic Rrspiration 252

11.Phototrophic Energy Metabolism: Photosynthesis 293

12.The Endomembrane System and Peroxisomes 324

13.Signal Transduction Mechanisms: I.Electrical and Synaptic Signaling in Neurons 365

14.Signal Transduction Mechanisms: II.Messengers and Receptors 392

15.Cytoskeketal Systems 425

16.Cellular Movement: Motility and Contractility 452

17.Beyond the Cells: Cell Adhesions, Cell Adhesions, Cell Junctions,
and Extracellular Structure 480

18.The Structural Basis of Cellular Information: DNA, Chromosomes, and the Nucleus 508

19.The Cell Cycle, DNA Replication, and Mitosis 551

20.Sexual Reproduction, Meiosis, and Genetic Recombination 600

21.Gene Expression: I. The Genetic Code and Transcription 645

22.Gene Expression: II. Protein Synthesis and Sorting 679

23.The Regulation of Gene Expression 710

24.Cancer Cells 757