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Biological membrane - Wikipedia, the free encyclopedia
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The cell membrane (also called the plasma membrane, plasmalemma, or "phospholipid bilayer") is a selectively permeable lipid bilayer found in all cells.
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Phospholipids are the major class of membrane lipids—they are abundant in all biological mem- branes. The general structure of phospholipids is shown at left.
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(short animations of biological processes) Membrane Transport...
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A component of every biological cell, the selectively permeable cell membrane(or plasma membraneor plasmalemma) is a thin and structured bilayerof phospholipidand protein moleculesthat envelopes the cell.
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The fluid mosaic model of lipid bilayer membranes, codified by Singer and Nicolson in 1972, describes the essential features of the biological membrane.
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Nuclear magnetic resonance (NMR) spectroscopy, and particularly solid-state NMR spectroscopy, is a method of choice to study the structure and dynamics of both the lipid and the protein components of model and biological membranes.
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Membrane may refer to: Biological membrane: Cell membrane Organelle membranes Outer membrane Inner membrane Mucous membrane Basement membrane Serous membrane Nonbiological membrane: Mechanical membrane: Membrane (acoustics), also called diaphragm (acoustics) Membrane electrode assembly...
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Now, that is only half of the story, because only about halfof the mass of the membrane is composed of phospholipids. So that if we were to make a picture -- in other words, takethat membrane and make a cross-section through the membrane, whatwe would see in addition the phospholipids would be some moleculesof protein.
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