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MEET THE SCIENTISTS
DEVELOPING THE CELL
THEORY
WHAT IS A CELL?
   The cell is the basic unit of structure
    and function in living organisms,
    including plants and...
ALL LIVING THINGS HAVE
         CELLS.
 Plants     Animals
TOOL USED TO
       VIEW CELLS



   The microscope is used to
    magnify extremely small objects.
TIMELINE - 1590

   Hans and Zacharias Janssen (1590)
       Dutch lens grinders
       Father and son
       Produced...
TIMELINE - 1665

   Robert Hooke (1665)
       English scientist
       Looked at a thin slice of cork through a
      ...
TIMELINE - 1680

   Anton van Leeuwenhook (1680)
       Dutch amateur scientist
       Looked at blood, rain water, and...
TIMELINE - 1838

   Matthias Schleiden (1838)
       German botanist
       viewed plant structures under a
        mic...
TIMELINE - 1839
   Theodor Schwann (1839)
       German zoologist
       viewed animal tissue taken from
        animal...
TIMELINE - 1855
   Rudoph Virchow (1855)
       German physician
       Stated that living cells come only from
       ...
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12 s061101 c_meet the scientists

  1. 1. MEET THE SCIENTISTS DEVELOPING THE CELL THEORY
  2. 2. WHAT IS A CELL?  The cell is the basic unit of structure and function in living organisms, including plants and animals.
  3. 3. ALL LIVING THINGS HAVE CELLS. Plants Animals
  4. 4. TOOL USED TO VIEW CELLS  The microscope is used to magnify extremely small objects.
  5. 5. TIMELINE - 1590  Hans and Zacharias Janssen (1590)  Dutch lens grinders  Father and son  Produced first compound microscope (2 lenses)
  6. 6. TIMELINE - 1665  Robert Hooke (1665)  English scientist  Looked at a thin slice of cork through a compound microscope and observed tiny, hollow room-like structures.  He called them cells, but he only saw the outer cell walls because the cork cells were not alive.
  7. 7. TIMELINE - 1680  Anton van Leeuwenhook (1680)  Dutch amateur scientist  Looked at blood, rain water, and scrapings from teeth through a simple microscope.  He called the structures he saw “animalcules”.
  8. 8. TIMELINE - 1838  Matthias Schleiden (1838)  German botanist  viewed plant structures under a microscope and discovered that they were made of cells.
  9. 9. TIMELINE - 1839  Theodor Schwann (1839)  German zoologist  viewed animal tissue taken from animal organs under a microscope and discovered the tissue was made of cells.
  10. 10. TIMELINE - 1855  Rudoph Virchow (1855)  German physician  Stated that living cells come only from other living cells (This is a part of cell theory.)

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