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function of proteins
3rd source of energy, helps builds and repairs muscle tissue, makes hormones, enzymes, antibodies, and pigments
complex carbohydrate that makes up the cell walls of fungi; also found in the external skeletons of arthropods
made in living systems from smaller building blocks covalently bonded; four classes: proteins, nucleic acids, carbohydrates, and lipids
any of a class of carbohydrates whose molecules contain chains of monosaccharide molecules
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