Sydney's Cell Theory Timeline

  • Zacharias Janssen Invents the First Compound Microscope

    Zacharias Janssen Invents the First Compound Microscope
    The invention of the compound microscope leads to the discovery of cells thus creating cell theory.
  • Jan Baptist van Helmont Makes Contribution in Photosynthesis

    Jan Baptist van Helmont Makes Contribution in Photosynthesis
    He thought plants grew from eating soil so that lead to people testing his hypothesis to help end Spontaneous Generation.
  • Anton van Leeuwenhoek Discovers Single-celled Organisms

    Anton van Leeuwenhoek Discovers Single-celled Organisms
    HIs discovery of single-celled organisms lead to people figuring out cell theory.
  • Robert Hooke Discovers Cells

    Robert Hooke Discovers Cells
    His discovery of cells led to other people trying to find more cells.
  • Louis Pasteur Shows Living Things Come From Other Living Things

    Louis Pasteur Shows Living Things Come From Other Living Things
    His discovery ends Spontaneous Generation.
  • Lorenz Oken Concluded All Organisms Originate From and Consist of Cells

    Lorenz Oken Concluded All Organisms Originate From and Consist of Cells
    His conclusion caused people to start to develope cell theory.
  • Robert Brown Discovers Nucleus

    Robert Brown Discovers Nucleus
    His discovery led to people starting cell theory.
  • Theodor Schwann Developes Cell Theory

    Theodor Schwann Developes Cell Theory
    His developement of cell theory led to Virchow creating cell theory.
  • Matthias Schleiden Concluded the Cell is the Basic Building Block of All Plant Matter

    Matthias Schleiden Concluded the Cell is the Basic Building Block of All Plant Matter
    His conclusion led to Schwann developing cell theory.
  • Albrecht von Roelliker Realized Sperm Cells and Egg Cells are Also Cells

    Albrecht von Roelliker Realized Sperm Cells and Egg Cells are Also Cells
    Led to people realizing more things are made of cells.
  • Rudolf Virchow Creates Cell Theory Based Off of Theodor's Work

    Rudolf Virchow Creates Cell Theory Based Off of Theodor's Work
    Cell theory is created.
  • Aristotle Started Spontaneous Generation

    Aristotle Started Spontaneous Generation
    Aristotle started Spontaneous Generation leading to people testing out his theory and discovering more things about cells and organisms.