Postulates of modern cell theory:
1. All living organisms are made up of cells.
2. Cell is the basic structural and functional unit of life.
3. All cells arise from pre-existing cells. (Rudolf Virchow 1858 – “Omnis cellula-e-cellula”).
4. Total activities of cells are responsible for activity of an organism.
5. Cells show transformation of energy.
6. Cells contain nucleic acids; DNA and RNA in the nucleus and cytoplasm.
