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Fluid mosaic model

Definition

A model conceived by S.J. Singer and Garth Nicolson in 1972 to describe the structural features of biological membranes.


Supplement

The plasma membrane is described to be fluid because of its hydrophobic integral components such as lipids and membrane proteins that move laterally or sideways throughout the membrane. That means the membrane is not solid, but more like a 'fluid'.

The membrane is depicted as mosaic because like a mosaic that is made up of many different parts the plasma membrane is composed of different kinds of macromolecules, such as integral proteins, peripheral proteins, glycoproteins, phospholipids, glycolipids, and in some cases cholesterol, lipoproteins.

According to the model, the plasma membrane is a lipid bilayer (interspersed with proteins). It is so because of its phospholipid component that can fold in itself creating a double layer - or bilayer - when placed in a polar surrounding, like water. This structural feature of the membrane is essential to its functions, such as cellular transport and cell recognition.


See also: plasma membrane, phospholipid, proteins


Additional Reference

See the cell biology tutorial for more basic information about the structure of a biological cell


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Re:

... proteins etc) are exposed to cytoplasm/tissue fluid. See fluid mosaic model; http://www.infoplease.com/images/cig/biology/02fig01.png

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by Squirrell
Thu Feb 16, 2012 8:59 pm
 
Forum: General Discussion
Topic: Please Help with Homework (fairly easy questions)
Replies: 6
Views: 38018

Cell Fusion experiment

... exactly as it was before E - shouldn't be (fluid mosaic model, right?)

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by JackBean
Thu May 19, 2011 6:04 am
 
Forum: Cell Biology
Topic: Cell Fusion experiment
Replies: 5
Views: 4973

Fluid mosaic model

According to the fluid mosaic model of membrane structure________: A) phospholipids flip-flop between ...

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by hannahzarzar
Thu May 19, 2011 12:04 am
 
Forum: Cell Biology
Topic: Fluid mosaic model
Replies: 3
Views: 7172

Re: *PLEASE URGENT HELP - FLUID MOSAIC MODEL*

... grade 11 student and today we spoke about the Fluid mosaic model in my Biology class. So I :?: just want to find out more about ...

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by Samy
Mon Feb 15, 2010 3:27 pm
 
Forum: Cell Biology
Topic: *PLEASE URGENT HELP - FLUID MOSAIC MODEL*
Replies: 4
Views: 12332

*PLEASE URGENT HELP - FLUID MOSAIC MODEL*

... a gr. 11 student who is doing an assignment on fluid-mosaic models i need to explain in "exceptional" detail how the ...

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by clareloveh
Fri Mar 13, 2009 12:59 am
 
Forum: Cell Biology
Topic: *PLEASE URGENT HELP - FLUID MOSAIC MODEL*
Replies: 4
Views: 12332
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