
The lipid bilayer is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. The cell membrane of almost all living organisms and many viruses are made of a lipid bilayer, as are the membranes surrounding the cell nucleus and other sub-cellular structures. The li...
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http://en.wikipedia.org/wiki/Lipid_bilayer

(from the article `cell`) ...they spontaneously form globular structures called liposomes. Investigation of the liposomes shows them to be made of concentric spheres, one ... ...in physical properties of a series of molecules with the same R3. In the presence of an excess of water, the molecules form aggregates with a ... ...and hydr...
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http://www.britannica.com/eb/a-z/l/56

The structure of a cell membrane, in which two layers of phospholipids spontaneously align so that the hydrophilic head groups are exposed to water, while the hydrophobic tails (consisting of fatty acids) are pointed toward the center of the membrane. This establishes a boundary separating the conte...
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http://www.daviddarling.info/encyclopedia/L/lipidbi.html

Synonym for phospholipid bilayer ... <biochemistry> A lamellar organisation of phospholipids that are packed as a bilayer with hydrophobic acyl tails inwardly directed and polar head groups on the outside surfaces. ... It is this bilayer that forms the basis of membranes in cells, though in most cellular membranes a very substantial proportio...
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http://www.encyclo.co.uk/local/20973

See phospholipid bilayer.
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http://www.encyclo.co.uk/visitor-contributions.php

biological membranes composed of two layers of phospholipid molecules with the nonpolar tails associating to form a hydrophobic barrier between the polar heads; also called unit membrane
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https://courses.lumenlearning.com/microbiology/chapter/glossary/
No exact match found.