Cell theory

Cell theory states that:

  1. All known living things are made up of cells.
  2. The cell is structural & functional unit of all living things.
  3. All cells come from pre-existing cells by division, (i.e. Spontaneous generation does not occur).
  4. Cells contain hereditary information which is passed from cell to cell during cell division.
  5. All cells are basically the same in chemical composition.
  6. All energy Flow (metabolism & biochemistry) of life occurs within cells.

This is a picture of an Allium cell demonstrating cell division, as described in the cell theory.


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