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Cell Membrane - Cell Wall

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"Cell walls are only found in plant cells and are used primarily to create structure, but cell membranes are found in all cells. The bulk of the membrane is composed of a double layer of lipids called the lipid bilayer. Inside the bilayer there is a layer of cholesterol to keep the membrane fluid. Imbedded in the membrane are various proteins which provide channels for specific molecules to pass through, making the membrane semi-permeable." Fuente: BrightStorm

Cell Membrane - Cell Wall es un video-tutorial (en inglés) de ©Brightstorm , en su portal disponen de muchos otros vídeos gratuitos de ciencias (Matemáticas, Biología, Química y Física).

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