Chapter 1. An Introduction to Biology
Unit I. Chemistry
Chapter 2. The Chemical Basis of Life I: Atoms, Molecules, and Water
Chapter 3. The Chemical Basis of Life II: Organic Molecules
Unit II. Cells
Chapter 4. Evolutionary Origin of Cells and Their General Features
Chapter 5. Membranes: The Interface Between Cells and Their Environment
Chapter 6. How Cells Utilize Energy
Chapter 7. How Cells Capture Light Energy via Photosynthesis
Chapter 8. How Cells Communicate with Each Other and with the Environment
Unit III. Genetics
Chapter 9. The Information of Life: DNA and RNA Structure, DNA Replication, and Chromosome Structure
Chapter 10. The Expression of Genetic Information via Genes I: Transcription and Translation
Chapter 11. The Expression of Genetic Information via Genes II: Non-coding RNAs
Chapter 12. The Control of Genetic Information via Gene Regulation
Chapter 13. Altering the Genetic Material: Mutation, DNA Repair, and Cancer
Chapter 14. How Eukaryotic Cells Sort and Transmit Chromosomes: Mitosis and Meiosis
Chapter 15. Transmission of Genetic Information from Parents to Offspring I: Patterns That Follow Mendels Laws
Chapter 16. Transmission of Genetic Information from Parents to Offspring II: Epigenetics, Linkage, and Extranuclear Inheritance
Chapter 17. The Simpler Genetic Systems of Viruses and Bacteria
Chapter 18. Genetic Technologies: How Biologists Study Genes and Genomes
Unit IV. Evolution
Chapter 19. Evolution of Life I: How Populations Change from Generation to Generation
Chapter 20. Evolution of Life II: The Emergence of New Species
Chapter 21. How Biologists Classify Species and Study Their Evolutionary Relationships
Chapter 22. The History of Life on Earth and Human Evolution
Unit V. Diversity
Chapter 23. Diversity of Microbial Life: Archaea, Bacteria, Protists, and Fungi
Chapter 24. Microbiomes: Microbial Systems on and Around Us
Chapter 25. Plant Evolution: How Plant Diversification Changed Planet Earth
Chapter 26. Invertebrates: The Vast Array of Animal Life Without a Backbone
Chapter 27. Vertebrates: Fishes, Amphibians, Reptiles, and Mammals
Unit VI. Flowering Plants
Chapter 28. An Introduction to Flowering Plant Form and Function
Chapter 29. How Flowering Plants Sense and Interact with Their Environments
Chapter 30. How Flowering Plants Obtain and Transport Water, Mineral Nutrients, and Organic Compounds
Chapter 31. How Flowering Plants Reproduce and Develop
Unit VII. Animals
Chapter 32. General Features of Animal Bodies, and Homeostasis as a Key Principle of Animal Biology
Chapter 33. Neuroscience I: The Structure, Function, and Evolution of Nervous Systems
Chapter 34. Neuroscience II: How Sensory Systems Allow Animals to Interact with the Environment
Chapter 35. How Muscles and Skeletons Are Adaptations for Movement, Support, and Protection
Chapter 36. Circulatory and Respiratory Systems: Transporting Solutes and Exchanging Gases
Chapter 37. Digestive and Excretory Systems: Maintaining Nutrient, Water, and Energy Balance and Removing Waste
Chapter 38. How Endocrine Systems Influence the Activities of All Other Organ Systems
Chapter 39. The Production of Offspring: Reproduction and Development
Chapter 40. Immune Systems: How Animals Defend Against Pathogens and Other Dangers
Chapter 41. Integrated Responses of Animal Organ Systems to a Challenge to Homeostasis
Unit VIII. Ecology
Chapter 42. Behavioral Ecology: The Struggle to Find Food and Mates and to Pass on Genes
Chapter 43. Population Growth and Species Interactions
Chapter 44. Communities and Ecosystems: Ecological Organization at Large Scales
Chapter 45. Biomes: How Climate Affects the Distribution of Species on Earth
Chapter 46. The Age of Humans
Chapter 47. Biodiversity and Conservation Biology
Appendix A. Periodic Table of the Elements
Appendix B. Answers to In-Chapter and End-of-Chapter Questions

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