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An Investigation to Determine the Effect of Temperature on the Permeability of a Beetroot Membrane.
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| Submitted: Thu Jul 11 2002
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An Investigation to Determine the Effect of Temperature on the Permeability of a Beetroot Membrane. Introduction The purpose of a cell membrane is to control the transport of substances moving into and out of a cell. The membrane is an extremely thin layer (8 to 10 manometers (nm)) thick, which is partially permeable. It consists mostly of lipids and proteins. The lipids found in cell membranes belong to a class known as triglycerides, so called because they have one molecule of glycerol chemically linked to three molecules of fatty acids. The majority belongs to one subgroup of triglycerides known as phospholipids. Despite their many differences in appearance and function, all cells have a surrounding membrane (called the plasma membrane) enclosing a water-rich substance called the cytoplasm. All cells host a variety of chemical reactions that enable them to grow, produce energy, and eliminate waste. Together these reactions are termed metabolism (from a...
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