Selectively permeable double layer of lipid and protein molecules.
Is Cell Wall Permeable. It can be tough, flexible, and sometimes rigid. The cell wall is the outermost covering of plant cells.
Cell Wall Structure and Function from fthmb.tqn.com
It can be tough, flexible, and sometimes rigid. However, the cell wall has a comparatively little role than the cell membrane. Animal cells however, do not have a cell wall.
It helps regulate the diffusion of material through the apoplast.
The cell wall is the outermost covering of plant cells. It give shape,rigidity and support to the cell. The cell wall of the plant cell is composed of cellulose (carbohydrates), bacterial cell wall contains sugar and amino acid polymer which is known as peptidoglycan while fungal it is thick permeable cell wall which is present in between the primary cell wall and plasma membrane in some plant cells. Cell wall is present only in plants, it is not found in all organisms.
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