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elements of carbohydrates

carbon, hydrogen, oxygen

elements of lipids

carbon and hydrogen

elements of proteins

nitrogen, carbon, hydrogen, and oxygen

elements of nucleic acids

hydrogen, oxygen, nitrogen, carbon, and phosphorus

monomers of carbohydrates

sugar molecules, monosaccharides

monomers of lipids

glycerol and fatty acids

monomers of proteins

amino acids

monomers of nucleic acids


purpose of carbohydrates

main source of energy, structural purposes

purpose of lipids

store energy, parts of biological membranes and waterproof coverings

purposes of proteins

control the rate of reactions, regulate cell processes, form cellular structures, transport substances into/out of cells help fight disease

purpose of nucleic acids

store and transmit genetic information

examples of carbohydrates

glucose, starch

examples of lipids

fats, oils, waxes, steroid hormones

examples of proteins

enzymes, antibodies, hemoglobin

examples of nucleic acids


the four kinds

carbohydrates, lipids, proteins, nucleic acids

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