These 106 in-depth tutorials are designed to illustrate and explain some of the many complex topics in biology. Each tutorial has four elements: an introduction that describes the topic to be illustrated and puts it into a broader context, a detailed animation that clearly illustrates the topic (there are a few tutorials that include simulations or other types of content, rather than animations), a conclusion that summarizes what you should have learned from the animation, and a quiz on the topic covered. The clear presentation of complex topics make these tutorials a powerful learning tool, be sure to work through them in their entirety for the best benefit. New to the Seventh Edition are 20 Key Experiment tutorials that expand upon some of the most important experiments depicted in the book, as well as 10 additional new tutorials. All the animated activities include textbook references, making it easy for you to look up a topic in the text for further explanation. For details on how the tutorials work, click the Help button on the Animation tab of a tutorial.

Note: An 'E' indicates an experiment tutorial. These correspond to experiment figures in the textbook.


Chapter 1: An Evolutionary Framework for Biology

PART ONE The Cell

Chapter 2: Life and Chemistry: Small Molecules

Chapter 3: Life and Chemistry: Large Molecules

Chapter 4: The Basic Units of Life

Chapter 5: Cellular Membranes

Chapter 6: Energy, Enzymes, and Metabolism

Chapter 7: Cellular Pathways That Harvest Chemical Energy

Chapter 8: Photosynthesis: Energy from the Sun

Chapter 9: Chromosomes, the Cell Cycle, and Cell Division

PART TWO Information and Heredity

Chapter 10: Genetics: Mendel and Beyond

Chapter 11: DNA and Its Role in Heredity

Chapter 12: From DNA to Protein: Genotype to Phenotype

Chapter 13: The Genetics of Viruses and Prokaryotes

Chapter 14: The Eukaryotic Genome and Its Expression

Chapter 15: Cell Signaling and Communication

Chapter 16: Recombinant DNA and Biotechnology

Chapter 17: Molecular Biology and Medicine

Chapter 18: Natural Defenses against Disease

PART THREE Development

Chapter 19: Differential Gene Expression in Development

Chapter 20: Animal Development: From Genes to Organism

Chapter 21: Development and Evolutionary Change

PART FOUR Evolutionary Processes

Chapter 22: The History of Life on Earth

Chapter 23: The Mechanisms of Evolution

Chapter 24: Species and Their Formation

Chapter 25: Reconstructing and Using Phylogenies

Chapter 26: Molecular and Genomic Evolution

PART FIVE The Evolution of Diversity

Chapter 27: Bacteria and Archaea: The Prokaryotic Domains

Chapter 28: Protists and the Dawn of the Eukarya

Chapter 29: Plants Without Seeds: From Sea to Land

Chapter 30: The Evolution of Seed Plants

Chapter 31: Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Chapter 32: Animal Origins and the Evolution of Body Plans

Chapter 33: Ecdysozoans: The Molting Animals

Chapter 34: Deuterostomate Animals

PART SIX The Biology of Flowering Plants

Chapter 35: The Plant Body

Chapter 36: Transport in Plants

Chapter 37: Plant Nutrition

Chapter 38: Regulation of Plant Growth

Chapter 39: Reproduction in Flowering Plants

Chapter 40: Plant Responses to Environmental Challenges

PART SEVEN The Biology of Animals

Chapter 41: Physiology, Homeostasis, and Temperature Regulation

Chapter 42: Animal Hormones

Chapter 43: Animal Reproduction

Chapter 44: Neurons and Nervous Systems

Chapter 45: Sensory Systems

Chapter 46: The Mammalian Nervous System: Structure and Higher Functions

Chapter 47: Effectors: Making Animals Move

Chapter 48: Gas Exchange in Animals

Chapter 49: Circulatory Systems

Chapter 50: Nutrition, Digestion, and Absorption

Chapter 51: Salt and Water Balance and Nitrogen Excretion

Chapter 52: Animal Behavior

PART EIGHT Ecology and Biogeography

Chapter 53: Behavioral Ecology

Chapter 54: Population Ecology

Chapter 55: Communities and Ecosystems

Chapter 56: Biogeography

Chapter 57: Conservation Biology

Chapter 58: Earth System Science