Development of the Cell theory

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Development of the Cell theory

  1. 1. Development of the Cell Theory
  2. 2. Zacharias Janssen 1590
  3. 3. Robert Hooke 1663 <ul><li>observed a thin slice of cork. </li></ul><ul><li>called the empty spaces “ cells ” </li></ul>
  4. 4. Anton van Leeuwenhoek 1674 <ul><li>observed drops of lake water </li></ul><ul><li>saw animalcules or “little animals” </li></ul>
  5. 5. Matthias Jakob Schleiden 1838 “ All plants are made up of cells.”
  6. 6. Theodor Schwa nn 1839 “ All animals are made up of cells.”
  7. 7. The Cell Theory <ul><li>All living things are composed of cells. </li></ul><ul><li>The cell is the basic 1 unit of life. </li></ul><ul><li>1 smallest </li></ul>
  8. 8. Rudolf Virchow 1855 “ All living cells arise from pre-existing cells.”
  9. 9. The Cell Theory <ul><li>All living things are composed of cells. </li></ul><ul><li>The cell is the basic 1 unit of life. </li></ul><ul><li>All living cells arise from pre-existing 2 cells. </li></ul><ul><li>1 smallest </li></ul><ul><li>2 already alive </li></ul>

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