Lindsey Cathey & Blake Mills
The cell envelope, comprising wall and one or two membrane layers, plays many key roles in bacterial cell function. It specifies cell shape, provides strength and protection, and represents a critical interface with the environment.The synthesis of cell envelope layers needs to be coordinated with cell growth!!The topology of envelope growth must be radically changed to bring about cell division!!The Cell Envelope is a prokaryotic cell.
Below is is picture of a cell Prokaryotic cell where the cell envelope is visible.
As you can see the cell envelope is external to the plasma membrane.
Also the cell envelope is the outer portion of a bacterial cell.