lecture 1. The scope of life -- lecture 2. More on the origin of life -- lecture 3. The organism and the cell -- lecture 4. Proteins, how things get done in the cell -- lecture 5. Which molecule holds the code -- lecture 6. The double helix -- lecture 7. The nuts and bolts of replicating DNA -- lecture 8. The central dogma -- leture 9. The genetic code -- lecture 10. From DNA to RNA -- lecture 11. From RNA to protein -- lecture 12. When mistakes happen -- lecture 13. Dividing DNA between dividing cells -- lecture 14. Mendel and his pea plants -- lecture 15. How sex leads to variation -- lecture 16. Genes and chromosomes -- lecture 17. Charles Darwin and The origin of species -- lecture 18. Natural selection in action -- lecture 19. Reconciling Darwin and Mendel -- lecture 20. Mechanisms of evolutionary change -- lecture 21. What are species and how do new ones arise -- lecture 22. More on the origin of new species -- lecture 23. Reconstructing evolution -- lecture 24. The history of life, revisited -- lecture 25. From cells to organisms -- lecture 26. Control of gene expression I -- lecture 27. Control of gene expession II -- lecture 28. Getting proteins to the right place -- lecture 29. Genetic engineering and biotechnology -- lecture 30. How cells talk, signals and receptors -- lecture 31. How cells talk, ways that cells respond -- lecture 32. From one cell to many in an organism -- lecture 33. Patterns of early development -- lecture 34. Determination and differentiation -- lecture 35. Induction and pattern formation -- lecture 36. Genes and development -- lecture 37. Homeostasis -- lecture 38. Hormones in animals -- lecture 39. What is special about neurons -- lecture 40. Action potentials and synapses -- lecture 41. Synaptic integration and memory -- lecture 42. Sensory function -- lecture 43. How muscles work -- lecture 44. The innate immune system -- lecture 45. The acquired immune system -- lecture 46. Form and function in plants I -- lecture 47. Form and function in plants II -- lecture 48. Behavior as an adaptive trait -- lecture 49. Energy and resources in living systems -- lecture 50. How energy is harnessed by cells -- lecture 51. Enzymes, making chemistry work in cells -- lecture 52. Cellular currencies of energy -- lecture 53. Making ATP, glycolysis -- lecture 54. Making ATP, cellular respiration -- lecture 55. Making ATP, the chemiosmotic theory -- lecture 56. Capturing energy from sunlight -- lecture 57. The reactions of photosynthesis -- lecture 58. Resources and life histories -- lecture 59. The structure of populations -- lecture 60. Population growth -- lecture 61. What limits population growth -- lecture 62. Costs and benefits of behavior -- lecture 63. Altruism and mate selection -- lecture 64. Ecological interactions among species -- lecture 65. Predators and competitors -- lecture 66. Competition and the ecological niche -- lecture 67. Energy in ecosystems -- lecture 68. Nutrients in ecosystems -- lecture 69. How predictable are ecological communities -- lecture 70. Biogeography -- lecture 71. Human population growth -- lecture 72. The human asteroid.