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Cell Theory is composed of three basic principles. The three principles are:
1. All organisms are made of one or more cells
2. The cell is the basic unit of structure and organization in organisms
3. All cells come from preexisting cells -
Zacharias Janssen produced the first compound microscope by combining two convex lenses within a tube.
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Robert Hooke discovered the cellular composition of cork and introduced the word cell into science.
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Francesco Redi disproved the phenomenon of spontaneous generation.
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Anton van Leeuwenhoek improved the magnification of the microscope by polishing the lense.
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Anton van Leeuwenhoek discovered small bacterium he named animalcules.
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Anton van Leeuwenhoek discovered bacteria from a saliva he aquiered from his mouth..
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Caspar Wolff proposed that all organs in animal embryos were composed of globules which could be seen under a microscope.
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Pierre Turpin reported his observations of cell division.
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Franz Meyen stated that each cell forms an independent, isolated whole it nourishes and builds itself.
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Robert Brown discovered the widespread occurrence of nuclei in cells.
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Matthias Schleiden discovered plants were composed of cells.
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Theodor Schwann discovered that animals were composed of cells.
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Hugo von Mohl carefully described details of mitosis in plants.
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Rudolph Virchow stated that all living things come from other living things.
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Louis Pasteur found ways to control and harvest bacteria, disease, and germs; he is also the reason vaccines exist today.
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Gregor Mendel published his investigations of plant hybrids.
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Anton Schneider observed and described chromosomes during cell division.
