Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    1
    ReputationRep:
    Hi guyss, so in my biology textbook it says this about triglycerides:

    "They are hydrophobic because the charges on the molecule are evenly distributed around the molecule. This means that hydrogen bonds cannot form with water molecules, so the two types of molecule do not mix together easily" -

    If anyone can explain that in more depth it would be greatly appreciated :/
    Thank you!
    Offline

    19
    ReputationRep:
    This is probably way more information than you were asking for, but here goes:

    Water is a polar molecule - the H ions have a relatively positive charge, the O ions are relatively negative. As such, substances that dissolve in water are relatively polar, or completely ionic themselves. The positive part of the molecule will form electrochemical bonds with the Oxygen parts, while the negative part of the molecule will form bonds with the hydrogens.

    Triglycerides, having evenly distributed charges (Equal charges throughout the entire molecule - no positive or negative regions, "neutral charge) will not form electrostatic bonds with Water. Therefore, it doesn't dissolve

    Just say if you want anything explained in more detail! Do you take chemistry at the moment?


    NB: Thought I might add - the electrostatic, Van der Waals forces between molecules of triglyceride will be greater than that between triglyceride and water. Because of the way molecules like to spread their energies, Triglyceride molecules will prefer to stick to each other rather than to water, making it essentially hydrophobic.
    • Thread Starter
    Offline

    1
    ReputationRep:
    Hey I think I've got it! Thank you! And yes I do do chemistry, but this is for biology.


    Posted from TSR Mobile
    Offline

    3
    ReputationRep:
    (Original post by Aleenaa)
    Hi guyss, so in my biology textbook it says this about triglycerides:

    "They are hydrophobic because the charges on the molecule are evenly distributed around the molecule. This means that hydrogen bonds cannot form with water molecules, so the two types of molecule do not mix together easily" -

    If anyone can explain that in more depth it would be greatly appreciated :/
    Thank you!

    (Original post by Another)
    x
    I read that as 'Why are triglycerides homophobic?' :lol:
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 2, 2015
Poll
Do you like carrot cake?

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

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