amphipathic molecule

Discussion of all aspects of cellular structure, physiology and communication.

Moderator: BioTeam

Post Reply
cellbiostudent
Garter
Garter
Posts: 2
Joined: Wed Jan 21, 2009 9:49 pm

amphipathic molecule

Post by cellbiostudent » Wed Jan 21, 2009 9:57 pm

What I know about amphipathic molecules are that they have both hydrophobic regions and hydrophilic regions. But why is it that in a aqueous solution the bilayer it is hydrophilic and monolayer is hrdrophobic?

User avatar
mith
Inland Taipan
Inland Taipan
Posts: 5345
Joined: Thu Jan 20, 2005 8:14 pm
Location: Nashville, TN
Contact:

Post by mith » Wed Jan 21, 2009 10:57 pm

I'd assume you'd have to look at the structures formed in water.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

cellbiostudent
Garter
Garter
Posts: 2
Joined: Wed Jan 21, 2009 9:49 pm

Post by cellbiostudent » Wed Jan 21, 2009 11:13 pm

the example that I am looking at the mono layer forms a sphere and the bilayer forms a vesicle that contains water.

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Thu Jan 22, 2009 2:31 am

because in a bilayer you have all the hydrophilic heads at the exterior and the hydrophobic tails together on the inside. In a monolayer, you have the hydrophilic heads on one side and the hydrophobic tails on the other, so one of the sides has to be hydrophobic.
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests