Cell Wall Vs Cell Membrane Function

The cell wall is found in the plants bacterial cells. Through these plasmodesmata the essential cell constituents get exchanged in between cells.

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Cell membrane also requires food and nutrition from the cell as it is living organelle of the cell.

Cell wall vs cell membrane function. The other difference between the cell wall and plasma membrane is with regards to their respective components. While the cell membrane can be found on covering the cells of both plants and animals cell walls can only be found in plants and some organisms e g. Their layer is made up of lipids and proteins and few carbohydrates while cell wall constituents may vary from chitin peptidoglycan and cellulose.

Whereas a cell wall consists of chitin lignin sugar cellulose and pectin among other molecules the plasma membrane is mostly made up of the phospholipid bilayer. The cell wall is mostly impermeable except for water molecules and ions. Complexity in the cell becomes higher from the lower level of uni.

Cell wall covers the cell membrane and forms the outer covering. The cell wall has many important functions in a cell including protection structure and support. The cell membrane is the outer covering of all cells that encapsulates various cell organelles.

It is composed of a lipid bilayer proteins as well as some carbohydrates. Defects or dysfunction in the cell membrane can lead to diseases. It also regulates the passage of fluids and other substance into and out of the cell.

It provides flexibility to the cell and it maintains the cytoplasm and osmotic balance inside the cell. This outer covering is positioned next to the cell membrane plasma membrane in most plant cells fungi bacteria algae and some archaea. Cell membrane do not contain cellulose cell wall does.

Similarly the function of the cell membrane is to protect the interior of the cell. Animal cells however do not have a cell wall. The primary functions of the rigid cell wall are to protect the cell to give it structural support and to prevent it from expanding.

A cell wall is a rigid semi permeable protective layer in some cell types. The cell membrane is elastic. Cell membrane is found in animal cells and cell wall in plant cells.

Instead the cell wall of adjacent cells in plants form cytoplasmic bridges called plasmodesmata. Cell membrane is partially permeable but cell wall is completely permeable. This difference makes a cell wall more elastic than the plasma.

The plasma membrane is delicate thin layer while cell wall is the thick and rigid layer plasma membrane is selectively permeable membrane allowing small molecules entry only. Cell membrane is also known as plasma membrane or plasma lemma cell wall is not.

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