Membrane Structure and Function
Peptidoglycan is a complex consisting of

oligo-saccharide and protein
aminoacid and carbohydrate
mono-saccharide and protein
polysaccharide and protein

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Membrane Structure and Function
Cholesterol is somewhat amphipathic due to

the five-methyl groups along with the hydrocarbon chain
the long branched hydrocarbon along with the four hydrocarbon rings
the three six-membered rings along with the single five-membered ring
the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule

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