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Semipermeable 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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How will conc. on 2 sides be equal when osmosis stops?

If the membrane is semipermeable and the solute cannot cross the membrane, the concentrations will not be the same. However, the osmotic ...

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by JackBean
Tue Dec 18, 2012 9:02 pm
 
Forum: Physiology
Topic: How will conc. on 2 sides be equal when osmosis stops?
Replies: 4
Views: 6300

How will conc. on 2 sides be equal when osmosis stops?

... but for the former, if i have a system which 2 sides are seperated by semipermeable membrane one is filled with NaCl solution and another with pure water. from many text books ...

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by kochibaza
Tue Dec 18, 2012 6:22 am
 
Forum: Physiology
Topic: How will conc. on 2 sides be equal when osmosis stops?
Replies: 4
Views: 6300

Tonicity Explanation

... water potential of the two solutions) of two solutions separated by a semipermeable membrane. It is commonly used when describing the response of cells immersed in an external ...

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by einfopedia
Wed Mar 28, 2012 7:44 am
 
Forum: Cell Biology
Topic: Tonicity Explanation
Replies: 11
Views: 26040

Re: Semipermeable membrane to select gender

... is possible in the state of our knowledge. The differences between the sperm (Y is a bit smaller than X) are not significant enough that a simple membrane could differentiate between the 2 kind. AFAIK some techniques are based on that difference but run the sperms on a gel to separate enough the ...

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by canalon
Thu Jan 13, 2011 10:54 pm
 
Forum: Cell Biology
Topic: Semipermeable membrane to select gender
Replies: 3
Views: 2266

Semipermeable membrane to select gender

Question/Business idea: Would it theoretically be possible to design a semipermeable mebrane which allows only sperm with an x or y- chromosome to get through. Enzymes could connect to the reproductive cells and let only a pre-defined kind through. This could ...

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by BlueFrog
Thu Jan 13, 2011 8:46 pm
 
Forum: Cell Biology
Topic: Semipermeable membrane to select gender
Replies: 3
Views: 2266
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