A Gel Like Layer Outside The Cell Wall And Membrane. It is present outside the cell membrane and is tough, flexible and sometimes rigid in its texture. It is mainly composed of cellulose, long fibres of carbohydrates including hemicellulose, lignin the cell wall is the outermost layer in a plant cell.
When these cells die they release a lipid.
Cell membrane helps in transport into and outside the cell. It is present outside the cell membrane and is tough, flexible and sometimes rigid in its texture. Cell membranes protect and organize cells. Outer membrane lies outside the thin peptidoglycan layer.