| 1. Biology in the 21st Century |
13. Principles of Ecology |
24. A Closer Look at Arthropods |
| 2. Chemistry of Life |
14. Interactions In Ecosystems |
25. Vertebrate Diversity |
| 3. Cell Structure and Function |
15. The Biosphere |
26. A Closer Look at Amniotes |
| 4. Cells and Energy |
16. Human Impact on Ecosystems |
27. Animal Behavior |
| 5. Cell Growth and Division |
17. The Tree of Life |
28. Human Systems and Homeostasis |
| 6. Meiosis and Mendel |
18. Viruses and Prokaryotes |
29. Nervous and Endocrine Systems |
| 7. Extending Mendelian Genetics |
19. Protists and Fungi |
30. Respiratory and Circulation Systems |
| 8. From DNA to Proteins |
20. Plant Diversity |
| 9. Frontiers of Biotechnology |
21. Plant Structure and Function |
31. Immune System and Disease |
| 10. Principles of Evolution |
22. Plant Growth, Reproduction, and Response |
32. Digestive and Excretory Systems |
| 11. The Evolution of Populations |
33. Protection, Support, and Movement |
| 12. The History of Life |
23. Invertebrate Diversity |
34. Reproduction and Development |
