Membrane Structure and Function
Peptidoglycan is a complex consisting of

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

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Membrane Structure and Function
Cholesterol is somewhat amphipathic due to

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

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