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The cell wall is the outermost covering of a cell, present only in plant cells. It is made up of pectin, hemicellulose, cellulose microfibrils, and proteins organized into two layers - primary cell wall and middle lamella. In many plant cells, a third layer called secondary cell wall, made up of lignin, is present between the primary cell wall and the cell membrane, and provides support, protection, and rigidity to plant cells.
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Cell Wall Structure and Function: Plant Cell Wall Structure
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A cell organelle is a tiny cellular structure that performs specific functions within a cell, such as a nucleus, mitochondria, ER, ribosomes, lysosomes, and Golgi.
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Let’s begin our journey somewhere pleasant: the beach! I thought I could relax for the whole day… until I saw how crowded it was. Just too many people! Nevertheless I must busily search…
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Gram staining is a special technique which is used to stain bacteria. This technique was developed by Christian Gram in 1884. The stain...
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The cell wall is the rigid, semi-permeable protective layer found in some cell types. Plants, animals, fungi, and algae have cell walls.
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Spirulina is a blue-green alga known scientifically as Cyanobacteria. It has long been used by the Aztecs, who harvested spirulina to make green cakes. As such, it has become a staple food source for many generations. Its nutritional value continues to be heralded not only on earth but in space as well. NASA has even
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Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
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Difference in cell wall of gram positive and gram negative bacteria notes Amazing mnemonic here.
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