Hey there! Sign in to join this conversationNew here? Join for free

What effect does cholesterol have on the polarity of the cell membrance? Watch

    • Thread Starter
    Offline

    0
    ReputationRep:
    Thanks!
    Offline

    0
    ReputationRep:
    You may aswell of said that in a different lanuage
    Offline

    14
    ReputationRep:
    (Original post by dancingqueen123)
    Thanks!
    What do you know about cholesterol, plasma membranes and membrane polarity? Can you work out what effect it might have? Try doing a bit of googling and formulate an idea. Then post back here what you found.
    • Thread Starter
    Offline

    0
    ReputationRep:
    I know that the phospholipid is polar. The heads are positively charged and the tails negatively. The cholesterol molecule has a charged and non-charged region and the charged region attracts to the phosphate heads and the non-charged region to the tails...so, no effect ?
    Offline

    2
    ReputationRep:
    (Original post by dancingqueen123)
    I know that the phospholipid is polar. The heads are positively charged and the tails negatively. The cholesterol molecule has a charged and non-charged region and the charged region attracts to the phosphate heads and the non-charged region to the tails...so, no effect ?
    Phospholipids and cholesterol are both amphipathic - i.e. have polar and nonpolar regions. I'm not aware of cholesterol having any effect on membrane polarity unless I've completely missed something - it increases (or decreases) fluidity and reduces permeability but these are steric effects. Is this an exam question?
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Did TEF Bronze Award affect your UCAS choices?
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.