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      AP Biology

      Update (Wednesday, April 14, 2021): The tutorial video and resources of Unit 6.2 are live now!

      Unit 1: Chemistry of Life

      1. Structure of Water and Hydrogen Bonding
      2. Elements of Life
      3. Introduction to Biological Macromolecules
      4. Properties of Biological Macromolecules
      5. Structure and Function of Biological Macromolecules
      6. Nucleic Acids

      Unit 2: Cell Structure and Function

      1. Cell Structure: Subcellular Components
      2. Cell Structure and Function
      3. Cell Size
      4. Plasma Membranes
      5. Membrane Permeability
      6. Membrane Transport
      7. Facilitated Diffusion
      8. Tonicity and Osmoregulation
      9. Mechanisms of Transport
      10. Cell Compartmentalization
      11. Origins of Cell Compartmentalization

      Unit 3: Cellular Energetics

      1. Enzyme Structure
      2. Enzyme Catalysis
      3. Environmental Impacts on Enzyme Function
      4. Cellular Energy
      5. Photosynthesis
      6. Cellular Respiration
      7. Fitness

      Unit 4: Cell Communication and Cell Cycle

      1. Cell Communication
      2. Introduction to Signal Transduction
      3. Signal Transduction
      4. Changes in Signal Transduction Pathways
      5. Feedback
      6. Cell Cycle
      7. Regulation of Cell Cycle

      Unit 5: Heredity

      1. Meiosis
      2. Meiosis and Genetic Diversity
      3. Mendelian Genetics
      4. Non-Mendelian Genetics
      5. Environmental Effects on Phenotype
      6. Chromosomal Inheritance

      Unit 6: Gene Expression and Regulation

      1. DNA and RNA Structure
      2. Replication
      3. Transcription and RNA Processing
      4. Translation
      5. Regulation of Gene Expression
      6. Gene Expression and Cell Specialization
      7. Mutations
      8. Biotechnology

      Unit 7: Natural Selection

      1. Introduction to Natural Selection
      2. Natural Selection
      3. Artificial Selection
      4. Population Genetics
      5. Hardy-Weinberg Equilibrium
      6. Evidence of Evolution
      7. Common Ancestry
      8. Continuing Evolution
      9. Phylogeny
      10. Speciation
      11. Extinction
      12. Variations in Populations
      13. Origins of Life on Earth

      Unit 8: Ecology

      1. Responses to the Environment
      2. Energy Flow Through Ecosystems
      3. Population Ecology
      4. Effect of Density of Populations
      5. Community Ecology
      6. Biodiversity
      7. Disruptions to Ecosystems
      三肖三马期期准选一码