Cell theory explains how all living organisms are composed of cells and how cells originate from pre-existing cells, meeting the criteria of a scientific theory but not a scientific law.
Cell theory states that all living organisms are made of cells as the smallest functional unit. It meets the definition of a scientific theory because it is based on extensive observations and experiments supporting the idea that living organisms are composed of cells and that cells arise from pre-existing cells. While cell theory is a well-established and widely accepted explanation, it is not considered a scientific law because laws describe events that are universally true under certain conditions, whereas theories explain phenomena based on evidence and observations.
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