Question

Where does cells come from.write the theory of cell

Answer 1

Answer:

Cell theory was put forward by a famous German botanist- Matthias Schleiden and an English zoologist- Theodor Schwann in the year 1839.

It has the following propositions:

1) Cells are the basic unit of life and they are therefore considered to be the building blocks of living organisms.

2) All the living organisms are made up of cells; a cell is the basic structural and functional unit of each living organism.

3) All cells are produced by cells that already pre-exist.

Answer 2

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• All cells come from pre-existing cells by cell division. Schwann also proposed “Free Cell Formation” or spontaneous generation of cells — this was before Pasteur's definitive experiments. Modern Cell Theory Also States: Life's chemical processes, such as metabolism, occur inside of cells.

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• The generally accepted parts of modern cell theory include: All known living things are made up of one or more cells. All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms.