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Microscope and Cell Theory
Anton van Leeuwenhoek
• first person given credit for the microscope
• Dutch biologist
• Looked at pond water
Robert Hooke
– Englishman
– Found cells in cork of plants
Robert Brown
– Scottish
– 1st to observe the nucleus of the cell
Matthias Schleiden
– German
– Said all plants are made of cells
Theodor Schwann
• Said all animals are made of cells
Rudolf Virchow
– German
– All cells are made from preexisting cells
Cell Theory
• The ideas of these scientists lead to the cell theory
1 All living things are composed of cells.
2 Cells are the basic units of structure and function in
living things.
3 All cells come from preexisting cells.