Unit 1:  Ecology

- Chapter 51 - Animal Behavior

- Chapter 52 - An Introduction to Ecology and the Biosphere

- Chapter 53 - Population Ecology

- Chapter 54 - Community Ecology

- Chapter 55 - Ecosystems and Restoration Ecology

- Chapter 56 - Conservation Biology and Global Change

Unit 2:  Introduction & Biochemistry

- Chapter 1 - Evolution, the Themes of Biology, and Scientific Inquiry

- Chapter 2 - The Chemical Context of Life

- Chapter 3 - Water and Life

- Chapter 4 - Carbon and the Molecular Diversity of Life

- Chapter 5 - The Structure and Function of Large Biological Molecules

Unit 3:  Cellular Theory

- Chapter 6 - A Tour of the Cell

- Chapter 7 - Membrane Structure and Function

- Chapter 8 - An Introduction to Metabolism

- Chapter 9 - Cellular Respiration and Fermentation

- Chapter 10 - Photosynthesis

- Chapter 11 - Cell Communication

- Chapter 12 - The Cell Cycle

Unit 4:  Genetics

- Chapter 13 - Meiosis and Sexual Life Cycles

- Chapter 14 - Mendel and the Gene Idea

- Chapter 15 - The Chromosomal Basis of Inheritance

- Chapter 16 - The Molecular Basis of Inheritance

- Chapter 17 - Gene Expression:  From Gene to Protein

- Chapter 18 - Regulation of Gene Expression

- Chapter 19 - Viruses

- Chapter 20 - DNA Tools and Biotechnology

- Chapter 21 - Genomes and Their Evolution

Unit 5:  Evolution and Diversity

- Chapter 22 - Descent With Modification - A Darwinian View of Life

- Chapter 23 - The Evolution of Populations

- Chapter 24 - The Origin of Species

- Chapter 25 - The History of Life on Earth

- Chapter 26 - Phylogeny and the Tree of Life

- Chapter 27 - Bacteria and Archaea

- Chapter 28 - Protists

- Chapter 29 - Plant Diversity I - How Plants Colonized Land

- Chapter 30 - Plant Diversity II - The Evolution of Seed Plants

- Chapter 31 - Fungi

- Chapter 32 - An Overview of Animal Diversity

- Chapter 33 - An Introduction to Invertebrates

- Chapter 34 - The Origin and Evolution of Vertebrates

Unit 6:  Plant Form and Function

- Chapter 35 - Plant Structure, Growth, and Development

- Chapter 36 - Resource Acquisition and Transport in Vascular Plants

- Chapter 37 - Soil and Plant Nutrition

- Chapter 38 - Angiosperm Reproduction and Biotechnology

- Chapter 39 - Plant Responses to Internal and External Signals

Unit 7:  Animal Form and Function

- Chapter 40 - Basic Principles of Animal Form and Function

- Chapter 41 - Animal Nutrition

- Chapter 42 - Circulation and Gas Exchange

- Chapter 43 - The Immune System

- Chapter 44 - Osmoregulation and Excretion

- Chapter 45 - Hormones and the Endocrine System

- Chapter 46 - Animal Reproduction

- Chapter 47 - Animal Development

- Chapter 48 - Neurons, Synapses, and Signaling

- Chapter 49 - Nervous Systems

- Chapter 50 - Sensory and Motor Mechanisms