Cell+Wall

The cell wall is what surrrounds the cell. It plays a very important part, because it detects wut can enter and leave the cell. It supports and protect the cell and also gives it shape. The cell wall is three layers. The Primary wall, the Secondary wall, and the Middle Lamella. The primary wall is the first wall and it creates a waxy cuticle that is impermiable as many types of invading particles. The secondary wall is not necessary for all things, such as grass and other flexible plants but wood or other non flexible plants would be the types of plants that would need a secondary wall. Then they are seporated by a layer called the Middle Lamella, of a jellylike polysaccharide called pectin. The middle lamella holds the cells together, and acts like bonding glue. This is so that plant cells can stay more close together.

The cell wall is outside the cell membrane. The cell wall is located inside the Prokaryote. The cell wall is located inside the Eukaryotes.







Picture 1.[|plant_cell_wall.gif] Picture 2.[|total_membrane.gif] Picture 3.[|apoplas.gif] Animation-[|MV1_tun_small.gif]

McDougal Littell-Biology Text book pg79 By: Stephen Nowicki [|www.AskJeeves.com] [|www.Google.com]