by
David Krogh

Supporting the 2nd edition of David Krogh's Biology: A Guide to the Natural World, every chapter of this Companion Website includes

• Basic Quiz – review basic concepts and terminology from every chapter
• Challenge Quiz – challenge your knowledge of the key concepts within each chapter
• Destinations – explore each chapter's concepts with links from around the world
• BioCast – learn about the latest research through these audio programs
• Key Terms – search the Web and learn to evaluate on-line resources

Select a chapter: 1: Science as a Way of Learning: A Guide to the Natural World 2: The Fundamental Building Blocks: Chemistry and Life 3: Water, pH, and Biological Molecules 4: Life's Home: The Cell 5: Life’s Border: The Plasma Membrane 6: Life’s Mainspring: An Introduction to Energy 7: Vital Harvest: Deriving Energy from Food 8: The Green World's Gift: Photosynthesis 9: Introduction to Genetics: Mitosis and Cytokinesis 10: Making Reproductive Cells: Meiosis 11: The First Geneticist: Mendel and His Discoveries 12: Chromosomes and Inheritance 13: DNA Structure and Replication 14: How Proteins Are Made: Genetic Transcription, Translation, and Regulation 15: The Future Isn’t What It Used to Be: Biotechnology 16: Charles Darwin, Evolutionary Thought, and the Evidence for Evolution: An Introduction to Evolution 17: The Means of Evolution: Microevolution 18: The Outcomes of Evolution: Macroevolution 19: A Slow Unfolding: The History of Life on Earth 20: Pond Dwellers, Log Eaters, and Self-Feeders 21: Movers and Shakers: The Animal Kingdom 22: Introduction to Plants: Plant Structure, Signaling, Defenses, and Responses to the Environment 23: Common Themes in the Green World: Plant Tissues, Growth, Transport, and Reproduction 24: Introduction to Animal Anatomy and Physiology: The Integumentary, Skeletal, and Muscular Systems 25: Control and Defense: The Nervous, Endocrine, and Immune Systems 26: Transport, Nutrition, and Exchange: Blood, Breath, Digestion, and Elimination 27: An Amazingly Detailed Script: Animal Development 28: How the Baby Came to Be: Human Reproduction 29: An Interactive Living World: Populations and Communities in Ecology 30: An Interactive Living World: Ecosystems and the Biosphere 31: Animal Behavior