Phospholipids

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akatalitha
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Phospholipids

Post by akatalitha » Thu Sep 20, 2012 4:33 am

Why doesn't the hydrophilic head on the outside of a cell membrane dissolve? Being hydrophilic means that it is easily dissolved in water and/or has an affinity, so it would make sense to me that the head would dissolve in any solvent, so why doesn't it?
Thanks for the help.

Cat
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Post by Cat » Thu Sep 20, 2012 6:28 pm

You need to realize that you are talking about a single molecule and not about something that can fall apart easily.

akatalitha
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Re: Phospholipids

Post by akatalitha » Fri Sep 21, 2012 1:47 am

So I asked other biology students in my class, and they said that just because the head is hydrophilic doesn't mean that it will dissolve. Also the head is attached to a hydrophobic fatty acid, which is another reason why it won't dissolve.
Their answers make sense, but I'd like to know if that is true.
Thank You

Cat
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Post by Cat » Fri Sep 21, 2012 2:39 am


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JackBean
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Post by JackBean » Wed Sep 26, 2012 11:34 am

akatalitha: they are exactly correct
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

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