| Term | Definition |
| monomer | make up molecules |
| polymer | many monomers |
| macromolecules | large polymers |
| condensation reaction | monomers link to form polymers through a chemical reaction |
| carbohydrate | compound made up of carbon, hydrogen, and oxygen atoms, all have CHO |
| monosaccharide | single sugar molecule, monomer, glucose |
| hydrolysis | decompose by reacting with water |
| disaccharide | a sugar formed from two monosaccharides, sucrose |
| polysaccharides | a sugar formed from two or more monosaccharides, glycogen |
| glycogen | how humans store energy |
| pentoses | 5 carbon sugars |
| hexoses | 6 carbon sugar |
| protein | macromolecule made of of amino acids |
| amino acid | basic building blocks of protein molecules |
| dipeptide | two amino acids bonded together |
| peptide bond | how amino acids bond |
| polypeptides | long amino acid chains, form proteins |
| lipids | fats, oils, waxes, steroids, stores energy, mostly composed of C and H |
| glycerol | with fatty acids, make up lipids |
| fatty acids | with glycerol, makes up most of lipid |
| triglyceride | a lipid made of 3 fatty acid molecules and 1 glycerol molecule |
| nucleic acid | large molecules that store information |
| ATP | main energy source that cells use for most of their work |
| nucleotide | the monomer of nucleic acid, 3 parts; phosphate group, sugar, nitrogen contained base |
| phospholipid | contains 2 fatty acids and one glycerolwith phosphate group attached to glycerol |
| wax | long fatty acid chain with long alcohol chain |
| steroid | 4 carbon rings with different function group attached |
| isomer | same chemical formula, different shape |