Cell Theory Timeline

Timeline created by Holden Daris
  • -384 BCE

    Aristotle

    Aristotle
    First to theorize that each germ came from another. Each gene has a "definite parent and a similar offspring" https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Zacharias Jansen

    Zacharias Jansen
    He worked with his father to invent the first compound microscope. His invention helped lead to the rejection of spontaneous generation because his device helped scientists look at the cells of different organisms. Timeline of the Cell Theory and the discovery of the ... - Preziprezi.com › timeline-of-the-cell-theory-and-the-discovery…
  • Jan Baptist van Helmont

    Jan Baptist van Helmont
    Proposed that mice could arise from rags and wheat kernels left in an open container for 3 weeks.
  • Robert Hooke

    Robert Hooke
    First person to observe cells. Coined the term "cell" while observing a piece of cork https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Francesco Redi

    Francesco Redi
    Performed an experiment that was one of the first to refute the idea that maggots (the larvae of flies) spontaneously generate on meat left out in the open air. He predicted that preventing flies from having direct contact with the meat would also prevent the appearance of maggots. https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Anton van Leeuwenhoek

    Anton van Leeuwenhoek
    Invented a lens for the microscope to magnify 270%. First to see spermatozoa and protozoa https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Lorenz Oken

    Lorenz Oken
    Developed a new system of animal classification based on evolution. Believed in both the ideas that all living organisms have cells and cells are formed by pre-existing cells" https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Robert Brown

    Robert Brown
    Discovered/named the cell nucleus. Stressed its importance in reproduction and recognized its significance as an essential organelle https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Matthias Schleiden

    Matthias Schleiden
    Who looked at numerous plant samples. Schleiden was the first to recognize that all plants, and all the different parts of plants, are composed of cells. https://science.howstuffworks.com/innovation/scientific-experiments/scientific-method4.htm
  • Theodor Schwann

    Theodor Schwann
    Reached the same conclusion as Schleiden but in animals. Ended controversy that plants and animals were fundamentally different. Examined the cellular structure in animal cartilage and determined that cells are the basic unit of life which included the first statement of the cell theory: All living things are made up of cells. https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Albrecht von Roelliker

    Albrecht von Roelliker
    Discovered through the help of powerful microscopes that the sperm and egg were composed of cells and that humans are formed of cells from beginning to end.
  • Robert Remak

    Robert Remak
    Discovered that the origin of cells was by the division of pre-existing cells. As well as several other key discoveries. https://en.wikipedia.org/wiki/Robert_Remak
  • Rudolf Virchow

    Rudolf Virchow
    First to demonstrate that the cell theory applies to both normal and diseased cells. Added to the cell theory and strengthened the theory that cells exist from pre-existing cells. https://quizlet.com/406766437/science-7-cell-theory-flash-cards/
  • Louis Pasteur

    Louis Pasteur
    Conducted experiments similar to Neddham but used it to disprove spontaneous generation. Used S shaped beaker to trap microorganisms and prevent them from entering broth. Postulated the germ theory which states that microorganisms cause infectious diseases. Proved the cell theory by showing that spontaneous generation does not exist and all cells are formed by pre-existing cells. https://quizlet.com/406766437/science-7-cell-theory-flash-cards/