Cell: Cells are the basic structural units of any living organism, which is referred to as building blocks of life.
Prokaryotic cell: A prokaryotic cell is a cell which has nucleus without nuclear membrane. This type of cells are found in bacteria and blue green algae which are called as prokaryotes.
Eukaryotic cell: An eukaryotic cell has a nucleus surrounded by a nuclear membrane. All the organisms other than bacteria and blue green algae have eukaryotic cells and are called as eukaryotes.