Theories
Cell Theory
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Cell theory is a foundational scientific theory in biology, first formulated in the mid-nineteenth century, holding that all living organisms are composed of cells, that cells are the basic structural and organizational unit of life, and that all cells arise from pre-existing cells.
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Cell Theory (Wikipedia)
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In biology, cell theory is a scientific theory first formulated in the mid-nineteenth century, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.
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