(a) Cholesterol is a lipid yet does not form membranes like the membrane lipids and is not used to store energy like the storage lipids. Explain. b) Glycerophospholipids and sphingolipids form membranes but triacylglycerols do not. Why?  (c) Triacylglycerols are used for long term energy storage but glycogen and starch are used for short term energy storage. Explain

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