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An outer membrane defines an inner region 1, which in turn surrounds level two membrane regions 2, 3 and 4. Region 4 has three deeper regions 5, 6 and 7, of which region 6 in turn has two deeper regions 8 and 9. Regions of the same depth share a color. The transport function at each membrane defines the overall logic of the membrane computer.
Evert Gorter and François Grendel (Dutch physiologists) approached the discovery of our present model of the plasma membrane structure as a lipid bi-layer. They simply hypothesized that if the plasma membrane is a bi-layer , then the surface area of the mono-layer of lipids measured would be double the surface area of the plasma membrane.
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Fluid mosaic model of a cell membrane. The fluid mosaic model explains various characteristics regarding the structure of functional cell membranes.According to this biological model, there is a lipid bilayer (two molecules thick layer consisting primarily of amphipathic phospholipids) in which protein molecules are embedded.
The movement of phospholipids, even those located in the outer leaflet of the membrane, is regulated by the actin-based membrane skeleton meshwork.Which is surprising, because the membrane skeleton is located on the cytoplasmic surface of the plasma membrane, and cannot directly interact with the phospholipids located in the outer leaflet of the plasma membrane.
English: a Overall structure of human CD9, viewed from the membrane plane (left and middle) and from the extracellular side (right). The transmembrane helices and the two extracellular loops (SEL and LEL) are labeled.
The earliest model bilayer system developed was the “painted” bilayer, also known as a “black lipid membrane.” The term “painted” refers to the process by which these bilayers are made. First, a small aperture is created in a thin layer of a hydrophobic material such as Teflon .
The following 14 pages use this file: Cell (biology) Cell membrane; Extracellular fluid; Fluid mosaic model; Glossary of cellular and molecular biology (0–L) History of cell membrane theory; Membrane models; Membrane potential; Yeast assimilable nitrogen; User:RoseZHill/sandbox; Wikipedia:Featured picture candidates/Cell membrane (diagrammatic)