| Bio 15.3 Applications of Genetic Engineering | 4 | March 22, 2012 |
| Bio 15.2 Recombinant DNA | 6 | March 22, 2012 |
| Bio 15.1 Selective Breeding | 4 | March 22, 2012 |
| Bio 14.3 Studying Human Genome | 4 | March 1, 2012 |
| Bio 14.2 Human Genetic Disorders | 2 | March 1, 2012 |
| Bio 14.1 Human Chromosomes | 6 | March 1, 2012 |
| HBio 8.7 Mutations | 5 | March 1, 2012 |
| HBio 8.6 Gene Expression and Regulation | 4 | March 1, 2012 |
| HBio 8.5 Translation | 5 | March 1, 2012 |
| HBio 8.4 Transcription | 6 | March 1, 2012 |
| HBio 8.3 DNA Replication | 3 | March 1, 2012 |
| HBio 8.2 Structure of DNA | 6 | March 1, 2012 |
| HBio 8.1 Identifying DNA as Genetic Material | 4 | March 1, 2012 |
| Bio 13.4 Gene Regulation and Expression | 7 | February 8, 2012 |
| Bio 13.3 Mutations | 5 | February 8, 2012 |
| Bio 13.2 Ribosomes and Protein Synthesis | 6 | February 8, 2012 |
| Bio 13.1 RNA | 9 | February 8, 2012 |
| HBio 7.4 Human Genetics and Pedigrees | 2 | January 17, 2012 |
| HBio 7.3 Gene Linkage and Mapping | 2 | January 17, 2012 |
| HBio 7.2 Complex Patterns of Inheritance | 4 | January 17, 2012 |
| HBio 7.1 Chromosomes and Phenotype | 5 | January 17, 2012 |
| HBio 34.4 Birth and Development | 7 | January 17, 2012 |
| Bio 12.3 DNA Replication | 5 | December 16, 2011 |
| Bio 12.2 The Structure of DNA | 5 | December 16, 2011 |
| Bio 12.1 Identifying the Substance of Genes | 6 | December 16, 2011 |
| HBio 34.4 Birth and Development | 4 | December 16, 2011 |
| HBio 34.3 Fetal Development | 7 | December 16, 2011 |
| HBio 34.2 Reproductive Processes | 9 | December 16, 2011 |
| HBio 34.1 Reproductive Anatomy | 13 | December 16, 2011 |
| HBio 6.6 Meiosis and Genetic Variation | 2 | December 5, 2011 |
| HBio 6.5 Traits and Probability | 6 | December 5, 2011 |
| HBio 6.4 Traits, Genes, and Alleles | 9 | December 5, 2011 |
| HBio 6.3 Mendel and Heredity | 5 | November 22, 2011 |
| HBio 6.2 Process of Meiosis | 5 | November 22, 2011 |
| HBio 6.1 Chromosomes and Meiosis | 10 | November 22, 2011 |
| Bio 11.4 Meiosis | 7 | November 22, 2011 |
| Bio 11.3 Other Patterns of Inheritance | 4 | November 22, 2011 |
| Bio 11.2 Applying Mendel's Principles | 9 | November 22, 2011 |
| Bio 11.1 The Work of Gregor Mendel | 12 | November 22, 2011 |
| Bio 34.4 Fertilization and Development | 12 | November 22, 2011 |
| Bio 34.3 The Reproductive System | 28 | November 17, 2011 |
| HBio 5.5 Multicellular Life | 8 | November 16, 2011 |
| HBio 5.4 Asexual Reproduction | 7 | November 16, 2011 |
| HBio 5.3 Regulation of the Cell Cycle | 8 | November 16, 2011 |
| HBio 5.2 Mitosis and Cytokinesis | 13 | November 16, 2011 |
| HBio 5.1 The Cell Cycle | 6 | November 16, 2011 |
| Bio 10.4 Cell Differentiation | 7 | November 7, 2011 |
| Bio 10.3 Regulating the Cell Cycle | 7 | November 7, 2011 |
| Bio 10.2 The Process of Cell Division | 22 | November 7, 2011 |
| Bio 10.1 Cell Growth, Division and Reproduction | 4 | November 7, 2011 |
| HBio 4.6 Fermentation | 5 | October 31, 2011 |
| HBio 4.5 Cellular Respiration in Detail | 3 | October 31, 2011 |
| HBio 4.4 Overview of Cellular Respiration | 6 | October 31, 2011 |
| HBio 4.3 Photosynthesis in Detail | 7 | October 31, 2011 |
| HBio 4.3 Photosynthesis in Detail | 7 | October 31, 2011 |
| HBio 4.2 Overview of Photosynthesis | 7 | October 31, 2011 |
| HBio 4.1 Chemical Energy and ATP | 5 | October 31, 2011 |
| HBio 3.5 Active Transport, Endocytosis and Exocytosis | 4 | October 17, 2011 |
| HBio 3.4 Diffusion and Osmosis | 8 | October 17, 2011 |
| HBio 3.3 Cell Membrane | 6 | October 17, 2011 |
| HBio 3.2 Cell Organelles | 17 | October 17, 2011 |
| HBio 3.1 Cell Theory | 10 | October 17, 2011 |
| Bio 7.4 Homeostasis and Cells | 7 | October 17, 2011 |
| Bio 7.3 Cell Transport | 12 | October 17, 2011 |
| Bio 7.2 Cell Structure | 26 | October 17, 2011 |
| Bio 7.1 Life is Cellular | 14 | October 14, 2011 |
| Bio 2.4 Chemical Reactions and Enzymes | 10 | September 19, 2011 |
| Bio 2.3 Carbon Compounds | 12 | September 19, 2011 |
| Bio 2.2 Properties of Water | 14 | September 19, 2011 |
| Bio 2.1 | 15 | September 19, 2011 |
| HBio 2.5 Enzymes | 5 | September 19, 2011 |
| HBio 2.4 Chemical Reactions | 8 | September 19, 2011 |
| HBio 2.3 Carbon-Based Molecules | 13 | September 19, 2011 |
| HBio 2.2 Properties of Water | 9 | September 19, 2011 |
| HBio 2.1 Atoms, Ions, and Molecules | 13 | September 19, 2011 |
| HBio 1.5 Biology and Your Future | 2 | September 6, 2011 |
| HBio 1.4 Biologists' Tools and Technology | 7 | September 6, 2011 |
| Bio 1.3 Studying Life | 16 | August 31, 2011 |
| Bio 1.2 Science in Context | 4 | August 31, 2011 |
| HBio Ch. 1.3 Scientific Thinking and Processes | 9 | August 21, 2011 |
| HBio Ch. 1.2 Unifying Themes of Biology | 6 | August 21, 2011 |
| HBio Ch 1.1 The Study of Life | 8 | August 21, 2011 |
| Bio Ch. 1.1 What is Science? | 10 | August 21, 2011 |