UNIT 1: The Nature of Life

Chapter 1 : The Science of Biology
Chapter 2 : The Chemistry of Life

UNIT 2: Ecology

Chapter 3 : The Biosphere
Chapter 4 : Ecosystems and Communities
Chapter 5 : Populations
Chapter 6 : Humans in the Biosphere

UNIT 3: Cells

Chapter 7 : Cell Structure and Function
Chapter 8 : Photosynthesis
Chapter 9 : Cellular Respiration
Chapter 10 : Cell Growth and Division

UNIT 4: Genetics

Chapter 11 : Introduction to Genetics
Chapter 12 : DNA and RNA
Chapter 13 : Genetic Engineering
Chapter 14 : The Human Genome

UNIT 5: Evolution

Chapter 15 : Darwin 's Theory of Evolution
Chapter 16 : Evolution of Populations
Chapter 17 : The History of Life
Chapter 18 : Classification

UNIT 6: Microorganisms and Fungi

Chapter 19 : Bacteria and Viruses
Chapter 20 : Protists
Chapter 21 : Fungi

UNIT 7: Plants

Chapter 22 : Plant Diversity
Chapter 23 : Roots, Stems, and Leaves
Chapter 24 : Reproduction of Seed Plants
Chapter 25 : Plant Responses and Adaptations

UNIT 8: Invertebrates

Chapter 26 : Sponges and Cnidarians
Chapter 27 : Worms and Mollusks
Chapter 28 : Arthropods and Echinoderms
Chapter 29 : Comparing Invertebrates

UNIT 9: Chordates

Chapter 30 : Nonvertebrate Chordates, Fishes, and Amphibians
Chapter 31 : Reptiles and Birds
Chapter 32 : Mammals
Chapter 33 : Comparing Chordates
Chapter 34 : Animal Behavior

UNIT 10: The Human Body

Chapter 35 : Nervous System
Chapter 36 : Skeletal, Muscular, and Integumentary Systems
Chapter 37 : Circulatory and Respiratory Systems
Chapter 38 : Digestive and Excretory Systems
Chapter 39 : Endocrine and Reproductive Systems
Chapter 40 : The Immune System and Disease