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Unformatted text preview: supplied by the genes in the nucleus. Signals transmitted via specific molecules that institute reactions in their receptors organize the individual cells into an integrated multicellular organism. All of the cellular membranes are essentially alike in structure, but differ in their constituent proteins. Consequently, they vary in the types of materials they recognize and in the reactions they initiate and conduct. The currently acceptable version of membrane structure is the fluid-mosaic model , which visualizes the membrane as a double layer of fluid lipids in which proteins float laterally, forming a changing mosaic pattern (refer to Figure 1 )....
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- Fall '08