fundamental unit of life, class9
The Fundamental Unit of Life · All living organisms in this universe are made up of cells. · They either exist as a single cell or as a combination of multiple cells. Discovered By Period of time What they discovered? Robert Hooke 1665 noticed the presence of cells in a cork slice Leeuwenhoek 1674 found the presence of living cells in the pond water Robert Brown 1831 recognized the existence of a nucleus in the cell Purkinje 1839 invented the term ‘Protoplasm’ which is the liquid present in a cell Schleiden and Schwann 1838, 1839 presented the cell theory that all organisms are actually made up of cells Virchow 1855 suggested that all cells come from cells that already exist in nature ...