Question

short notes on cell theory?​

Answer 1

Cell theory:

The cell theory, that all the plants and animals are composed of cells and that the cell is basic unit of life, was presented by two biologists, M. Schleiden (1838) and T. Schwann (1839).

The cell theory was further expanded by a german physiologist, Rudolf Virchow (1855). He gave the phrase 'Omnis cellula-e-cellula', i.e., all cells arises from pre-existing cells.

Modified cell theory is termed as cell principle or modern cell theory which postulates that:

1. All living organisms are composed of cells or cell products.

2. All living cells arise from pre-existing cells.

3. All cells are basically alike in chemical composition and metabolic processes.

Hope you found this helpful :)

Answer 2

Hey mate here is your answer....

Formally established by Theodor Schleider and Matthias Schwann in 1839, cell theory (or cell doctrine) is the most basic tenet underlying the field of biology. Modern cell theory states that

The cell is the structural and functional unit of all living things.

All organisms are composed of one or more cells.

New cells come from pre-existing cells; lifeforms today have descended in unbroken continuity from the first primitive cells that arose on earth more than 3.5 billion years ago.

Hereditary information passes from parent cell to child cell.

All cells have the same basic chemical structure.

The fundamental biochemical reactions of life take place within cells.

Hope it helps you.....