What is the major component of plasma membranes?

What is the major component of plasma membranes?
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Most of the membrane is composed of phospholipid molecules.These allow the membrane tobe rather fluid (not stiff). Embedded in this membrane areproteins which give some structure to the membrane. The 3rdcomponents are proteins or glycolipids.Cholesterol is also found in the membrane. It prevents lowertemperatures from inhibiting the fluidity of the membrane andprevents higher temperatures from increasing fluidity.Cholesterol is only found in animal cells.
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With respect to lipoprotein transport and metabolism in the body, the following statements are correct EXCEPT: 1) Arterial walls contain cells with LDL receptors. 2) Cholesterol is required for the formation of red blood cell membranes. 3) Chylomicrons are synthesized in the liver. 4) HDL is assembled in the extracellular space. 5) VLDL transformation to LDL occurs in adipose tissue.

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