CHM 33300 Study Guide - Quiz Guide: Deprotonation, Equilibrium Constant, Leucine

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Proteins: 50 or more amino acid polymers (polypeptides) Present in proteins, cocoons, webs, hair, hemoglobin: fibrous: polypeptide chains in long fibers or sheets, water insoluble, tough but can be stretchy. Function of fibrous: insets and spiders use these silk fibers for cocoons and webs, collagen and elastin used in animal tendons in ligaments, keratin (hair protein) used for hairs, horns and feathers. Contraction of fibrous: actin and myosin contract & create cleavage furrows that move muscles, proteins like cilia and flagella. Function of globular proteins: ovalbumin, casein, insulin, glucagon. Globular proteins: chains are folded into tight round shapes, easily soluble in aqueous solutions. Casein: protein in milk, a. a source for baby mammals. I(cid:374)suli(cid:374): (cid:862)allo(cid:449) sugar i(cid:374)to (cid:272)ells(cid:863); (cid:449)he(cid:374) (cid:271)lood glu(cid:272)ose le(cid:448)els are high (cid:272)ells (cid:449)ill tra(cid:374)sport glucose into the cells for use or storage. Glu(cid:272)ago(cid:374): (cid:862)(cid:449)e (cid:374)eed (cid:373)ore sugar i(cid:374) the (cid:271)lood(cid:863); (cid:449)he(cid:374) (cid:271)lood glu(cid:272)ose is lo(cid:449) (cid:272)ells (cid:449)ill release glucagon. Transportation of globular proteins: help move other substances.