Carbohydrates: made of monosaccharides, sugars, main source of energy for living things, glucose, fructose, cellulose, starch, , Lipids: made of fatty acid chains, saturated or unsaturated, long-term energy storage, nonpolar, do not dissolve in water, fats, oils & waxes, , Protein: defense, transport, structure, regulatory, enzymes, insulin, made of amino acids, do EVERYTHING, a chain of amino acids, Nucleic Acids: made of nucleotides, , store genetic information, double helix (spiral) shape, , code for proteins,

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