INTRODUCTION. 1. The Science of Biology. Unit I: PRINCIPLES OF CELLULAR LIFE. 2. Life's Chemical Basis. 3. Molecules of Life. 4. Cell Structure. 5. Ground Rules of Metabolism. 6. Where It Starts-Photosynthesis. 7. Releasing Chemical Energy. UNIT II: GENETICS. 8. DNA Structure and Function. 9. From DNA to Protein. 10. Control of Gene Expression. 11. How Cells Reproduce. 12. Meiosis and Sexual Reproduction. 13. Patterns in Inherited Traits. 14. Human Inheritance. 15. Biotechnology. UNIT III: PRINCIPLES OF EVOLUTION. 16. Evidence of Evolution. 17. Processes of Evolution. 18. Life's Origin and Early Evolution. UNIT IV: EVOLUTION AND BIODIVERSITY. 19. Viruses, Bacteria, and Archaea. 20. The Protists. 21. Plant Evolution. 22. Fungi. 23. Animals I: Major Invertebrate Groups. 24. Animals II: The Chordates. UNIT V. HOW PLANTS WORK. 25. Plant Tissues. 26. Plant Nutrition and Transport. 27. Plant Reproduction and Development. UNIT VI. HOW ANIMALS WORK. 28. Animal Tissues and Organ Systems. 29. Neural Control. 30. Sensory Perception. 31. Endocrine Control. 32. Structural Support and Movement. 33. Circulation. 34. Immunity. 35. Respiration. 36. Digestion and Human Nutrition. 37. Maintaining the Internal Environment. 38. Reproduction and Development. UNIT VII: PRINCIPLES OF ECOLOGY. 39. Animal Behavior. 40. Population Ecology. 41. Community Ecology. 42. Ecosystems. 43. The Biosphere. 44. Human Effects on the Biosphere. Appendix I: Periodic Table of the Elements. Appendix II: Amino Acids. Appendix III: A Closer Look at Some Major Metabolic Pathways. Appendix IV: A Plain English Map of the Human Chromosomes. Appendix V: Restless Earth-Life's Changing Geologic Stage. Appendix VI: Units of Measure. Appendix VII: Answers to Self-Quizzes and Genetics Problems. Glossary. Index.