Review part 1 - 1. Plasma membrane serves 2 functions:...

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1. Plasma membrane serves 2 functions: retains cell contents so they do not leak out sugars, amino aids, ions; and it allows to exchange necessary exchange of material in and out of the cell. (repiratory gases hormones waste products, etc) 2. The Fluid Mosaic Model Of Membrane Structure: ‘central dogma’: physical state of the lipid is fluid; lipid molecules can move; associated proteins penetrate lipid bilayer in discontinuous fashion; lipid functions as: structural backbone; proteins carry out specific functions of the membrane. Gorter and Grendel experiments proved that the membrane consisted of a bilayer. A cell membrane , plasma membrane or plasmalemma is a selectively permeable lipid bilayer coated by proteins which comprises the outer layer of a cell. It is a fluid patchwork of molecules in constant motion. This mobility is due to the flexible proteins and oily phospholipids that make up most of the membrane's chemical structure. Carbohydrates attached to the proteins and phospholipids form
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Review part 1 - 1. Plasma membrane serves 2 functions:...

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