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Development of the CELL THEORY

Development of the CELL THEORY. Lens. Support for specimen. Adjustments. Anton van Leeuwenhoek. First light microscopes Spherical lenses 200 – 500 x Magnification Discovered ‘ infusoria ’ (protists), Bacteria, spermatozoa

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Development of the CELL THEORY

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  1. Development of the CELL THEORY

  2. Lens Support for specimen Adjustments Anton van Leeuwenhoek • Firstlight microscopes • Spherical lenses • 200 – 500 x Magnification • Discovered ‘infusoria’ (protists), Bacteria, spermatozoa • First to describe muscle cells, red blood cells, blood flow in capillaries

  3. Robert Hooke • Also made some early compound microscopes • 1665 publishes “Micrographia” • Coined the term “cell” Ocular lens Body Tube Objective lens Specimen

  4. Robert Hooke Hooke’s micrscope & his famous drawing of cells from the Cork Oak, from “Micrographia”

  5. Matthias Schlieden • Botanist • All plants are made of cells • A cell’s nucleus is involved in its reproduction

  6. Theodor Schwann • All animals are made of cells • (but not all cells have the same properties!) • Histology • Schwann cells!

  7. Rudolf Virchow • Cells can only arise from pre-existing cells • “Omnis cellula e cellula”

  8. Schlieden + Schwann + Virchow… BBFF’s! • *Biological Best Friends Forever… their ideas formed…

  9. Cell Theory • The cell is the basic unit of structure of all life. • The cell is the basic unit of function of all life. • All cells arise from pre-existing cells.

  10. Plant & Animal Cells

  11. Prokaryotes & Eukaryotes

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