Function of cholesterol in plasmalemma is to
The fluidity of the lipid bilayer is decreased in following three ways Lowering temperature Increasing saturation of fatty acyl tails in phospholipid membrane Increase membrane cholesterol content. Cholesterol interacts with the phospholipid membrane containing fatty acyl chains, compacting them, constraining the motion in bilayers, hence decreasing the fluidity. Ref: Lehninger 30e pg 395.
Increase the fluidity of lipid bilayer
Decrease the fluidity of lipid bilayer
Facilitate the diffusion of ions into the lipid bilayer
Assist in the transpo of hormones across the lipid bilayer
General anatomy