Cell Mitosis
Mitosis is how cells reproduce, or make more cells. A single cell divides into two cells.
At the Cells Alive! website you can watch an animation of cell mitosis: http://www.cellsalive.com/mitosis.htm
Read more and watch another animation at the University of Arizona website: http://www.biology.arizona.edu/Cell_bio/tutorials/cell_cycle/cells3.htmlÂ