Biology Basics
  • What is Biology?
  • What is Biology? (Part 2): Characteristics of Life
  • Homeostasis
  • Homeostasis (Part 2): Feedback Loops
  • Section 1 Quiz
Building Cells
  • The Chemistry of Biology (Part 1): Atoms, Subatomic Particles, Periodic Table
  • The Chemistry of Biology (Part 2): Bonds and Ion Formation
  • The Chemistry of Biology (Part 3): Ionic Compounds
  • The Chemistry of Biology (Part 4): Covalent Compounds, Polarity and H-Bonds
  • Quiz: Chemistry of Biology
  • Water's Biological Importance
  • Quiz: Water's Biological Importance
  • Biomolecules: Intro
  • Biomolecules: Carbohydrates
  • Biomolecules - Lipids
  • Biomolecules - Proteins (Part 1)
  • Biomolecules - Proteins (Part 2)
  • Biomolecules - Nucleic Acids
  • Quiz: Biomolecules
Cellular Basics
  • The Cell (Part 1): Cellular Basics
  • The Cell (Part 2): Membranes, Surface Area to Volume ratio, nuclei, DNA
  • The Cell (Part 3): The Endomembrane System
  • The Cell (Part 4): Additional Organelles
  • The Cell (Part 5): Cytoskeleton, Intracellular Junctions
  • Quiz: The Cell
  • The Cell Membrane
  • Cell Membranes (Part 2): Concentration Gradients, Permeability, Tonicity
  • Cell Membranes (Part 3): Passive/Active Transport, Bulk Transport
  • Quiz: Cell Membranes
Cell Reproduction
  • The Cell Cycle and Mitosis (Part 1): The Cell Cycle
  • The Cell Cycle and Mitosis (Part 2): Stages of Mitosis
  • The Cell Cycle and Mitosis (Part 3): Cytokinesis and Binary Fission
  • Quiz: Mitosis
  • Meiosis (Part 1): Overview
  • Meiosis (Part 2): Stages of Meiosis
  • Meiosis (Part 3): Meiosis vs. Mitosis and Genetic Implications
  • Meiosis (Part 4): Meiotic Errors
  • Quiz: Meiosis
DNA and the "Central Dogma of Biology"
  • DNA (Part 1): Early experimentation to determine the genetic material
  • DNA (Part 2): DNA Structure
  • DNA (Part 3): DNA Replication
  • Quiz: DNA
  • DNA to Protein (Part 1): "The Central Dogma of Biology" and messenger RNA
  • DNA to Protein (Part 2): Transcription
  • DNA to Protein (Part 3): Translation
  • Quiz: DNA to Protein