History of cell theory

By Bread Crumbs

  • First evidence on the existence of cells

    First evidence on the existence of cells
    English scientist Robert Hooke deduced the existence of microscopic creatures by using a rudimentary microscope. he described them as ''cells''.

  • First observation of microorganisms

    First observation of microorganisms
    Anton Van Leeuwenhoek (father of microbiology) Managed to observe living microorganisms for the first time after perfecting the microscope. he

  • Deduction that plants are composed of cells

    Deduction that plants are composed of cells
    German Botanist Matthias Schleiden proposed that all plants are made up of cells.

  • Conclusion that cells make all living organisms

    Conclusion that cells make all living organisms
    German zoologist Theodor Schwann extended Matthias theory to the animal kingdom, concluding that all living organisms are made of cells.

  • Cells come from other cells theory

    Cells come from other cells theory
    German physician Rudolf Virchow added to the theory that cells come from other cells.

  • Contradiction to spontaneous generation theory

    Contradiction to spontaneous generation theory
    Louis Pasteur refuted the theory of spontaneous generation by demonstrating that life arises from pre-existing organisms.

  • Introduction of prokaryotic and eukaryotic cells

    Introduction of prokaryotic and eukaryotic cells
    French biologist Edouard Chatton introduced the prokaryotic and eukaryotic cells, allowing better clasifications and comprehension of living organisms.

  • Discovery of the structure of DNA

    Discovery of the structure of DNA
    British scientist Rosalind Franklin discovered the helical structure of DNA by using X-ray diffraction.
    afterwards, it was proposed by James Watson and Francis Crick.

  • Endosymbiotic theory

    Endosymbiotic theory
    American biologist Lynn Margulis revolutionized cell biology by proposing the endosymbiotic theory (how eukaryotic cells evolved from symbiotic relationships between prokaryotic cells)