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Difference between cell wall and cell …

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Difference between cell wall and cell membrane

    • Posted by Badal Singh 4 years, 7 months ago

    CBSE > Class 08 > Science
    • 1 answers

    Sia ? 4 years, 7 months ago

    CELL WALL CELL MEMBRANE
    Present only in plants and in some fungi, bacteria, algae. Present in all types of cells, in humans, animals, plants, bacteria, etc.
    It is the outermost part of the plant cell It is the outermost covering the animal cells
    It is made up of pectin, chitin, lignin, glycoproteins, glycolipids, sugar, and cellulose. It is a lipid bilayer. And is composed of lipoproteins and carbohydrates.
    The cell wall is 0.1 μm to several μm in thickness The cell membrane is 7.5–10 nm in thickness
    It is the thick and rigid structure with a fixed shape. It is a thin and delicate structure. It is flexible to change the shape as needed.
    It protects the cell from the external environment. It protects and maintains the internal environment of the cell.
    The cell wall is metabolically inactive The cell membrane is metabolically active.
    The cell wall grows in thickness over time. Further, it occupies the whole cell in the plant as the cell ages and dies. It is of the same thickness for the lifetime of the organism.
    The cell wall is fully permeable to smaller molecules with the size of 30-60 kDa. The membrane is selectively permeable and controls the movement of the substance into and outside the cell.
    Functions include protection from the external environment. Functions include permeability, signal reception, motility conduction, cell division, sexual reproduction, etc.

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