•  Kale   ( @kale@lemmy.zip ) 
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    29 months ago

    Cellulose, starch, and chitin are all sugar polymers in plants and crustaceans (may be a broader group, I used chitosan from crustaceans though).

    In mammals, collagen is a polymer. It’s like 30% of a humans non-water weight. Bones are composites that are tough collagen binding hard and strong fibers of apatite (mostly calcium apatite/ hydroxyapatite). I don’t think the apatite system is considered a polymer, though.

    Triglycerides aren’t polymers in adipose tissue. Although plant triglycerides can split and polymerize. Which make beautiful wood stains.