Why Cells Divide - Cuntorio

There are two important factors that limit the size of a cell and motivate its division. The first is the relative size of the surface area of the plasma membrane and the volume of the cell. When a cell grows, the volume of a cell increases faster than the surface area enclosing it. This is because volume increases by the cube of the radius (volume of a sphere = (4⁄3)πr3, where r is the radius),