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as arthropods moths possess an exoskeleton composed of chitin
setae are not keratin based mammalian hairs but are composed of chitin as is its exoskeleton
chitin is a molecule made up of bound units of acetylglucosamine
spiders possess an exoskeleton composed of chitin molecule made up of bound units of acetylglucosamine
insect is supported by a jointed exoskeleton composed of chitin
insects exoskeleton is primarily composed of chitin a polysaccharide
chitin polysaccharide complex carbohydrate molecule which is itself a polysaccharide