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Partially-permeable membrane

Definition

noun

A membrane that is selectively permeable, i.e. being permeable to only certain molecules and not to all molecules.


Supplement

An example of such membrane is the cell membrane wherein it allows passage of only certain types of molecules by diffusion and occasionally by facilitated diffusion.


Synonyms:

See also: cell membrane


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Cells and pH

... Do you mean the pH inside or outside the cells? Although the answer is partially the same in both: cellular metabolism affects the cytoplasmic pH, ... extreme pH values. Finally in very high or low pH the integrity of cell membrane will be lost, although some specialist cell types can survive in ...

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by biohazard
Sun Sep 30, 2007 1:03 pm
 
Forum: Cell Biology
Topic: Cells and pH
Replies: 5
Views: 13035

The Fiber Disease

... ProteintJ ABSTRACT: The ligand-binding property of a cytoplasmic membrane-bound protein from bovine retinal pigment epithelium (RPE) has been ... CA), which was constructed from human placental DNA by the insertion of partially digested Sau3AI DNA fragments into theXhoI cloning site. why that's ...

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by London
Sat Dec 02, 2006 11:03 pm
 
Forum: Human Biology
Topic: The Fiber Disease
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Views: 5559897

The Fiber Disease

... the surface involves syntaxin proteins, which are found on the target membrane. We have found that syntaxin 4 is exclusively basolateral, while ... found that when epithelia cells remodel to form tubes, they start by partially dedifferentiating, losing their epithelial polarity and taking ...

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by Skytroll
Fri Jul 07, 2006 5:33 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
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The Fiber Disease

... Caulonema cell at the tip of Funaria: freeze fracture of the plasma membrane. The protein molecules are partially arranged in rosettes. It is likely that these aggregates are a component of the cellulose ...

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by London
Fri Dec 02, 2005 11:43 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
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Effects of temperature on plant cells(beetroot)

... the water aroound them and start to diffuse out of the cell through the partially permiable membrane, But won't the Membrane get damaged by high temparatures.

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by Madbio
Thu Nov 10, 2005 5:28 pm
 
Forum: Cell Biology
Topic: Effects of temperature on plant cells(beetroot)
Replies: 6
Views: 15409


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