All cells are not the same because..

The simple answer is that all cells are not same due to the vast difference in their internal structures.
For example two type of cells are:
1) Prokaryotic: these cells have no nucleous and they are small and simple.
2) Eukaryotic: These cells have a neucleous and are large and complex as opposed to prokaryotic.

answer; /// i believe the name your looking for is called (plaque)or check good luck