write a note on cell write a note on cell theory
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cell theory was by schwann and scheilden
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✔Cell is the fundamental structural and functional unit of all living organisms.
⭐ In 1838, Matthias Schleiden studied various types of plants and found that plants are composed of cells which forms the tissues of the plant.
⭐At around the same time, in another year, in 1839, Theodore Schwann studied various animals and found that they are composed of cell membrane called plasma membrane.
⭐Schleiden and Schwann together formulated the cell theory.
⭐However, it did not explain as to how new cells were formed.
⭐Rudolf Virchow in 1855 first explained that cells divide and new cells are formed from pre-existing cells.
⭐Cell theory is defined as:
● All cells are composed of cells and its products.
●New cells are formed from pre-existing cells.
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