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Aristotle was the first person to have ideas of cell theory, he started a theory and experimented with it. ¨Through his study of chick embryos, Aristotle articulated principles of generation to account for the theory that developing organisms go through a series of stages before acquiring their final form.¨ He called this experiment ¨epigenesis.¨
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Jan made a contribution to the cell theory by studying photosynthesis. ¨Jean discovered that the mass of the entire plant was far more than the weight of the displaced original pounds of soil.¨
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Zacharias Jansen contributed to the cell theory by inventing the revolutionary compound optical microscope.
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He made use of a microscope containing improved lenses that could magnify objects almost 300-fold, or 270x.
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Robert Hooke contributed to cell theory by discovering the object in the microscope that he could only describe as a cell.
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Robert Brown contributed to cell theory by discovering the part of the cell known as the nucleus.
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Lorenz Oken contributed to cell theory by coming up with the conclusion that "All living organisms originate from and consist of cells"
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Matthias Jakob Schleiden contributed to cell theory by coming up with the conclusion that ¨All plant tissues are composed of cells.¨
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Theodor Schwann contributed to cell theory by concluding ¨that all tissues are made up of cells.¨
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Albrecht von Roelliker contributed to cell theory by helping ¨to confirm the view that cells arise only from other cells.¨
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Rudolf Virchow contributed to cell theory by using ¨the theory that all cells arise from pre-existing cells to lay the groundwork for cellular pathology.¨
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Louis Pasteur contributed to cell theory by ¨disproving spontaneous generation.¨
