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Early Scientists
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Anton van Leeuwenhoek Discovers single-celled, animal-like organisms, now called protozoans. (1683) First compound light microscope
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Robert Hooke Coined the term “cell” (1665)
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Matthias Schlieden All plants are made of cells (1838)
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Theodor Schwann All animals are made of cells (1839)
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Rudolf Virchow Cells can only arise from pre-existing cells (1855)
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Cell Theory All organisms are made of cells.
All cells arise from pre-existing cells. The cell is the most basic unit of life.
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Spontaneous Generation?
Francesco Redi Italian doctor who proved maggots came from flies (1668)
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Germ Theory of Disease Microscopic organisms cause diseases.
Frenchman Louis Pasteur
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Why do we care today?
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