Question

postulates of cell theory

Answer 1

1-All living organism are composed of cell and their products.
2-Cell is called structural and functional of life because all the metabolic reactions takes place in cell.
3-All new cell arise from pre-existing cells
4-Every organism starts its life with a single cell.

Viruses are exceptions to this theory

Answer 2

The three basic tenants of the cell theory are:
1) All living organisms are composed of one or more cells. (However, this is controversial because non-cellular life such as viruses are disputed as a life form.
2) The cell is the basic unit of structure and organization in organisms.
3) Cells come from pre-existing cells.