<prompt> Which among the following is the function of cholesterol in the Plasmalemma:Increase fluidity of the lipid bilayer.Decrease fluidity of the lipid bilayerFacilitate the diffusion of ions through the lipid bilayerAssist in the transpo of hormones across the lipid bilayer  <response>: The fluidity of the lipid bilayer is decreased in 3 ways: 1 By lowering the temperature, 2 By increasing the saturation of the fatty acyl tails of the phospholipid molecules, and 3 By increasing the membranes cholesterol content Cholesterol interacts with phospholipids containing unsaturated fatty acyl chains, compacting them and constraining their motion in bilayers, hence decreases the fluidity. 