Major Discoveries Related to Cell
Major Discoveries Related to Cell
Major Discoveries related to Cell
|
Scientist |
Year |
Work |
|
Robert Hooke |
1665 |
Discovered cells for first time in cork slice with the help of a primitive microscope. |
|
Leeuwenhoek |
1674 |
Discovered free living cells in pond water by his improved microscope. |
|
Robert Brown |
1831 |
Discovered nucleus in cell |
|
Schleiden and Schwan |
1838 - 1839 |
Presented cell theory, which states that all plants and animals are composed of cells and the cell is the basic unit of life. Schwan cell theory: A. He reported that cells have a thin outer later which is today known as plasma membrane. B. Cell wall as unique character of plant cell. C. Body of plant and animals are composed of cells and product of cells. |
|
Purkinje |
1839 |
Coined the term 'protoplasm' for the fluid substance of cell |
|
Virchow |
1855 |
Expanded the cell theory by suggesting that all cells arise from pre existing cells` |
|
Knoll and Ruska |
1940 |
Built an electron microscope that made understanding of the complex structure of cell and its organelles possible. |
Organelles were not clear evident in cells until the invention of the _______ microsope | |||
| Right Option : B | |||
| View Explanation | |||
The theory given by the scientist Schleiden and Schwann is called as ______________________ | |||
| Right Option : B | |||
| View Explanation | |||
Cells are first focused in microscope under ________________ | |||
| Right Option : B | |||
| View Explanation | |||
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