The cell Membrana

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Janie B


Date added:

December 15, 2013








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The phospholipids can move to the opposite side of a bacterial cell membrane in a few minutes at room temperature. That is a distance several thousand times the size of the phospholipid. Membrane proteins diffuse throughout the membrane in the same fashion, though at a slower pace because of their relatively massive size compared to a phospholipid molecule...
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. There are molecules of cholesterol embedded in the membrane. Cholesterol is a necessary component of biological membranes. Cholesterol breaks up the Van der Waals interactions and close packing of the phospholipid tails. This disruption makes the membrane more fluid. Therefore, one way for a cell to control the fluidity of its membrane is by regulating its level of cholesterol in the cell membrane...
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