fat cell

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

Moderators: Leonid, amiradm, BioTeam

paperclip
Garter
Garter
Posts: 37
Joined: Mon Aug 15, 2005 12:54 pm

fat cell

Post by paperclip » Thu Sep 22, 2005 10:16 am

i know the bits and pieces that go to form the lipid bilayer of a cell membrane. But what is the names of the bits and pieces ?of the bilayer? that keeps the cell membrane from dissolving into a heap of goo within and without? Cn't be phosphate and metal cations only.

baikuza
Coral
Coral
Posts: 429
Joined: Tue Aug 30, 2005 10:09 am
Location: Yogyakarta, indonesia, south-east asia
Contact:

Post by baikuza » Thu Sep 22, 2005 11:56 am

u'r talking about organic compounds, are u?

...are there any organel that consist of metal as the element?

try this
http://blanco.biomol.uci.edu/Bilayer_Struc.html
http://users.rcn.com/jkimball.ma.ultran ... ranes.html
http://www.answers.com/topic/lipid-bilayer
or this one, actually it's same as up here
http://psychcentral.com/psypsych/Lipid_bilayer

paperclip
Garter
Garter
Posts: 37
Joined: Mon Aug 15, 2005 12:54 pm

Post by paperclip » Thu Sep 22, 2005 3:33 pm

Erm how about Na+ and K+ in transit between the bilayer?

User avatar
victor
King Cobra
King Cobra
Posts: 2668
Joined: Sat Apr 30, 2005 12:01 pm
Location: Yogyakarta, Indonesia..
Contact:

Post by victor » Fri Sep 23, 2005 12:15 pm

I think they use an antiport fascilitated diffusion system by reffering to the concentration gradient inside and outside the cell itself..
Q: Why are chemists great for solving problems?
A: They have all the solutions.

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 » Fri Sep 23, 2005 8:14 pm

The integrity of the cellular membrane and it's structure is a very complicated thing, impossible to answer here. Alberts has 200 pages on this...
"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

baikuza
Coral
Coral
Posts: 429
Joined: Tue Aug 30, 2005 10:09 am
Location: Yogyakarta, indonesia, south-east asia
Contact:

Post by baikuza » Sun Oct 02, 2005 1:24 am

yeah!
Mr. Mistery is right.
beside Na+ and K + there are more activities at membrane cell.
try book(s) about prokaryotic cell.
all metabolism activites take place at its membrane.
just like what i got in my lecture

__________
awake on the day
knowing u are talking together,
i just wanna to join the fun

paperclip
Garter
Garter
Posts: 37
Joined: Mon Aug 15, 2005 12:54 pm

Post by paperclip » Mon Oct 03, 2005 4:23 am

That's not fair! If all metabolism takes place at the cell membrane than why is the cytosol not all membranes and no conduits?

baikuza
Coral
Coral
Posts: 429
Joined: Tue Aug 30, 2005 10:09 am
Location: Yogyakarta, indonesia, south-east asia
Contact:

Post by baikuza » Mon Oct 03, 2005 11:48 am

oh.. sorry
very sorry..
ok, I will said that '"Almost of the processes of metabolism in prokaryotic cell take place in its membrane cell, not in membrane which belong to organelle because it do not have any organelle."

men always have weakness. uh..am i must said this. but i'm so sorry. :oops:
_______
no body is perfect.

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 » Mon Oct 03, 2005 6:15 pm

Also take note that even in an abiotic hidrophilic environment lipids form mycels and then break up and form bilayers...
"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

paperclip
Garter
Garter
Posts: 37
Joined: Mon Aug 15, 2005 12:54 pm

Post by paperclip » Mon Oct 10, 2005 4:45 am

Can you also explain why oils float on water? I guess waxes can float too.

User avatar
Poison
Inland Taipan
Inland Taipan
Posts: 2322
Joined: Sun Jan 02, 2005 12:44 pm
Location: Turkey

Post by Poison » Mon Oct 10, 2005 5:58 am

Density. Water's density > Oil's density
It matters not how strait the gate
How charged with punishment the scroll
I am the Master of my fate
I am the Captain of my soul.

paperclip
Garter
Garter
Posts: 37
Joined: Mon Aug 15, 2005 12:54 pm

Post by paperclip » Mon Oct 10, 2005 7:25 am

Can it get more fundamental? How does density affect floatation?

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest