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Lipid bilayer

Definition

noun

Phospholipids organized in two layers wherein their hydrophobic tails are projecting inward while their polar head groups are projecting outward


Supplement

The lipid bilayer is used to describe the membranes of animal and plant cells in which the organization of the phospholipids are essential in cell membrane functions, such as the selective permeability to ions and molecules between the cell and the environment. The lipid bilayer of the cell membranes of many animals and plants have proteins dispersed or interspersed on the lipid bilayer. This organization functions primarily in the selective transport of molecules in and out of the cell.


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Re: Lipid Bilayers vs Micelles

... structure that maximizes hydrophobic/philic interaction. In phospholipids, however, the hydrophobic tails have a greater cross-sectional area ... phospholipids to "hide" their hydrophobic tails is the lipid bilayer configuration. Hopefully that helps anyone who stumbles across this ...

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by squillss
Wed Feb 06, 2013 9:34 am
 
Forum: Molecular Biology
Topic: Lipid Bilayers vs Micelles
Replies: 3
Views: 7063

Protein movment in cell membrane?

I was reading about the phospholipid bilayer/membranes and how it's fluid like in nature which is the reason why molecules such as proteins ...

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by aic92
Tue Dec 13, 2011 4:42 pm
 
Forum: General Discussion
Topic: Protein movment in cell membrane?
Replies: 4
Views: 2916

Re: Plant vacuole

... for that. From this I may suspect that the tonoplast is not just any lipid bilayer and that it is is more adept at handling tonicity than the plasma membrane. Exactly. ...

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by Maatomaat
Thu Nov 24, 2011 11:04 am
 
Forum: Cell Biology
Topic: Plant vacuole
Replies: 8
Views: 5958

Re: Plant vacuole

... for that. From this I may suspect that the tonoplast is not just any lipid bilayer and that it is is more adept at handling tonicity than the plasma membrane.

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by Adz795
Thu Nov 24, 2011 10:46 am
 
Forum: Cell Biology
Topic: Plant vacuole
Replies: 8
Views: 5958

Digestive System Evolution

... that something is able to evolve from simple (only ribosyme, only lipid bilayer) into something complicated (ribosome, nowaday membrane). There is nothing to discuss ...

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by JackBean
Mon Oct 10, 2011 3:57 pm
 
Forum: Evolution
Topic: Digestive System Evolution
Replies: 60
Views: 98212
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