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What is the difference between cell wall and cell membrane or plasma membrane? Why animal cells lack cell wall? This video summaries the basic differences between cell wall and cell membrane. http://www.majordifferences.com/2013/10/difference-cell-wall-vs-and-cell.html
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The topic of our discussion is the difference between cell wall and cell membrane
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Do you know the difference between cell wall and cell membrane? How cell wall is different from a cell membrane
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We'll be discussing in detail. These are the key points. Cell membrane or plasma membrane is present in old cells and is responsible for maintaining a constant internal environment in cell cytoplasm
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Whereas cell wall is absent in animal cell and plasma membrane forms the outermost boundary in the case of animal cells
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Cell wall composition may differ in different groups of organisms. We'll be discussing the different
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in detail in the coming slides. And this is a structure of a plant cell
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and this is a plant cell wall. Plant cell wall forms the outermost boundary in the case of plant cell
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and inner to the cell wall is a plasma membrane. Cell wall is present in plant cell
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fungal cell and also in bacteria. The chemical composition made different groups
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Plant cell it is made up of cellulose, whereas in fungus it is made up of chyton
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whereas peploclichen is a composition in the case of bacterial cell. Plasma membrane is a structure that is a
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seen inner to the cell wall in the case of plant cells. Whereas in the case of animal
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cells, plasma membrane forms the outermost boundary. And plant cells actually lacks cell wall. Plasma membrane, or plasma membrane is chemically a phospholipid
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bilayer plus small amount of carbohydrate and proteins. Why cell cell wall is absent in
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animal cell? Actually the logical reason is as plant cell the cell wall offers
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protection or rigidity Plants are autodrops It can synthesize its own food by photosynthesis so that plants need not move in search of food therefore protection is more important than movement whereas in the case of animals animals are
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hetrotrophs it need to move in search of food therefore cell wall cell wall will want help
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absence of cell wall actually offers animal cells to move and search for food now the second
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difference cell wall is a very thick rigid structure that is visible under light microscope many plants
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And cell wall, animal cell wall all can be seen under light microscope, whereas cell membrane, it is very thin, delicate, fine structure that is visible only under lie electron microscope
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Cell wall is completely permeable to ordinary molecules, its actual function is protection, whereas plasma membrane or cell membrane is selectively permeable, allowing only certain molecules to enter into the cell, preventing all others from entry
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There are a number of receptors on the surface of these cell membrane that is actually communicating with the outside
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part of the cell. And the fourth difference is cell wall is metabolically inactive and non-living
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whereas cell membrane is metabolically active and living, that is actually controlling the movement
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of molecule across the cell membrane. The function of cell wall is protection and also it determines
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the shape of the cell. Cell membrane protects the protoplasm and also maintains an internal
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environment that is unique to that particular type of cell. It allows only certain molecules to
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enter and preventing all other molecules from entry into this cell. And
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These are the basic differences between cell wall and cell membrane. If you like this video, please share, subscribe and like
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Thanks for watching
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