Cholesterol is found in the blood, phospholipid bilayer of cell membranes and in the liver where is it produced. It is also found in hormones.
cholesterol
It depends on which lipid bilayer you're talking about. There is the phospholipid bilayer that surrounds eukaryotic cells, cholesterol phospholipid bilayers, protein lipid bilayers, phase transition lipid bilayer, lipid bilayer membrane...
Yes, that is why they call it the fluid mosaic bilayer. All the integrin proteins and cholesterol are constantly moving position in the bilayer, except when they are anchored.
Yes. One major importance of cholesterol is that it maintains the fluidity of cellular membranes by increasing the distance and lessening the electrostactic interactions between the fatty acid "legs" of the lipid bilayer. If there were none, then the membrane would be more gel-like and cellular metabolism would be less efficient.
Membranes of the organelles and of the cell itself are made mainly out of a lipid bilayer. There may be proteins and cholesterol inside the bilayer but its concentration depends on the organelle. The ribosomes are proteins.
The framework of the cell membrane is formed by the lipid bilayer. The lipid bilayer is composed of two layers of fat cells organized in two sheets. This is what provides the barrier that makes the boundaries of the cell.
4 major parts of a plasma membrane * proteins * lipid bilayer * carbohydrates * cholesterol
cholesterol
Low cholesterol is found in grains especially whole grains.
the cholesterol will help to prevent the fatty-acid tails of the phospholipids bilayer from sticking together, which contributes to the fluidity of the plasma membrane.
The main component of cell membranes are made up of phospholipids. In fact, another name for the cell membrane is the phospholipid bilayer.