state the difference between cell membrane and cell wall
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The cell wall is the outer most covering of the cell. The cell wall covers the cell membrane. The cell membrane is also known as the plasma membrane or plasmalemma. There is no other name for the cell wall. The cell membrane is present in almost all types of cells. The cell wall is present in bacteria, fungi, algae and plant cell. It is absent in an animal cell and protozoa. The cell membrane is a biological membrane, which is semi- permeable. It allows the passage of certain substances through them.
The function of the cell membrane is the same as that of the skin. It separates the components inside the cell from the outside. The cell membrane provides support to the cytoskeleton of the cell, gives shape to the cell, and helps in the formation of tissues by attaching the matrix found in the extra cellular. It allows the passage of a certain substance; it maintains the potential of the cell, helps in communication with other cells, and act as molecular signals. Protein receptors are present which receives signals from the other cells and the environment.
The function of the cell wall is to provide strength and rigidity to the cell. It protects the cell against mechanical forces. The function of the cell wall varies in different cells. In multi-cellular organism, it is responsible for its morphology. It prevents only large molecules from entering the cell and thereby, prevents toxicity to the cell whereas cell membrane prevents entry of smaller molecules. The cell wall also helps in retaining the water of the cell, thus a stable osmotic environment is created in the cell.
The function of the cell membrane is the same as that of the skin. It separates the components inside the cell from the outside. The cell membrane provides support to the cytoskeleton of the cell, gives shape to the cell, and helps in the formation of tissues by attaching the matrix found in the extra cellular. It allows the passage of a certain substance; it maintains the potential of the cell, helps in communication with other cells, and act as molecular signals. Protein receptors are present which receives signals from the other cells and the environment.
The function of the cell wall is to provide strength and rigidity to the cell. It protects the cell against mechanical forces. The function of the cell wall varies in different cells. In multi-cellular organism, it is responsible for its morphology. It prevents only large molecules from entering the cell and thereby, prevents toxicity to the cell whereas cell membrane prevents entry of smaller molecules. The cell wall also helps in retaining the water of the cell, thus a stable osmotic environment is created in the cell.
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cell membrane is selectivity permyable cell but whereas the cell wall is not.
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