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Home Q & A Board Biology-Related Homework Help Biochemistry
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Mateyman Mateyman
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3 years ago
So I understand cholestrol affects membrane fluidity and its inverse with temp

high temp > cholesterol makes membrane less fluid

low temp > cholesterol makes membrane more fluid

Is this correct so far or did I get them switched up? For EX antarctic fish is more fluid cos its at low temp

NOW, llipid bilayer is also temp dependent BUT when lipid bilayer cools down it becomes less fluid

So is this correct? Cholesterol and temp is inverse in terms of fluidity and bilayer and temp is direct in terms of fluditiy?
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#1
Educator
3 years ago
Quote from: Mateyman (3 years ago)
Is this correct so far or did I get them switched up? For EX antarctic fish is more fluid cos its at low temp

I didn't know there was an inverse relationship.

Cholesterol makes membranes fluid, that's the extent of what I know.
wrote...
#2
Staff Member
3 years ago
Cholesterol acts as a bidirectional regulator of membrane fluidity because at high temperatures, it stabilizes the membrane and raises its melting point, whereas at low temperatures it intercalates between the phospholipids and prevents them from clustering together and stiffening.
- Master of Science in Biology
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Mateyman Author
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#3
3 years ago
Thanks
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