Question

explain the cell theory.​

Answer 1

In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells.

Answer 2

Answer:

The Cell theory :

• It was jointly puri forward by Schleiden and Schwann.
• The theory proposed the cells are the units of both structure and function of organisms.
• Rudolf Virchow observed new cells develop from pre existing cells by cell division.
• This gave the final shape of the cell theory.
• Louis Pasteur observed that life originated from life.
• Haeckel observed that nucleus stores and transmits hereditary information.
• Cell theory was modified accordingly.

The fundamental features of cell theory included :

• All the living organisms are composed of cells.
• Each cell is made up of small mass of protoplasm which contains nucleus.
• The cell also has a plasma membrane with or without cell wall.
• All the cells are similar chemically.
• The activities inside the organism are some total activities and interactions of the constituent cells.