Question

what is the cell theory? who proupounded it and when​

Answer 1

cell theory was presented by Schleidn , Schwan and Rudolph Virchow . it was given in 1839 .

it includes :-

1. all living cells arise from the pre existing cells.
2. all living being are composed of cells
3. All cells are basically alike in structure and metabolic activities .
4. the functions of an organism as a whole is the result of activities and interactions of the constitute cell
5. A cell is a mass of protoplasm containing a nucleus and bounded by a cell membrane