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Phospholipid bilayer

Definition

noun

The two layers of phospholipids arranged in such a way that their hydrophobic tails are projecting inwards while their polar head groups are projecting on the outside surfaces


Supplement

This arrangement of phospholipids in bilayer is used to describe the cell membranes of many animal and plant cells. The two layers of phospholipids are arranged in a way that their hydrophobic tails are projecting to the interior whereas their hydrophilic heads are projecting the exterior. This organization of phospholipids in the cell membranes makes the latter selectively permeable to ions and molecules.


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Re: Lipid Bilayers vs Micelles

... simplest structure that maximizes hydrophobic/philic interaction. In phospholipids, however, the hydrophobic tails have a greater cross-sectional ... 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

Need help with Plasma Membrane

... I will tell you what I know. Plasma membrane is made mostly of a phospholipid bilayer. Has some protein as well as cholesterol. And I think some carbohydrates (is that true?) ...

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by MissionCO
Sun Mar 04, 2012 1:18 am
 
Forum: Cell Biology
Topic: Need help with Plasma Membrane
Replies: 4
Views: 6620

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 are ...

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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: Theories - Origin of Life

... forces. Integral membrane proteins penetrate or are embedded in the phospholipid bilayer. Without the membrane to protect it the cell would disintegrate. http://en.wikipedia.org/wiki/Cell_membrane ...

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by scottie
Tue Oct 11, 2011 10:24 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755197

Re: Specific Osmosis Question

... me to elaborate. The plasma membrane of animal cells is composed of a phospholipid bilayer in which proteins are embedded (integral proteins) or also occur on the cytoplasmic ...

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by chrisPbacon
Fri Sep 30, 2011 10:36 pm
 
Forum: Cell Biology
Topic: Specific Osmosis Question
Replies: 1
Views: 6083
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