| Term | Definition |
| monomer | A smaller unit which is joined together to form a polymer. |
| polymer | A long molecule consisting of many similar or identical monomers linked together. |
| carbohydrates | Organic compounds made of carbon, hydrogen, and oxygen atoms in the proportion of 1:2:1. |
| monosaccharides | One- sugar = simple sugars consisting of one sugar molecule. |
| lipids | Biochemicals that do not dissolve in water (fats, oils, and waxes) make up cell membranes, store energy |
| Nucleic acids | Macromolecules that contain hydrogen, oxygen, nitrogen, carbon, and phosphorus. Nucleic acids are polymers made from monomers called nucleotides. Nucleic acids store and transmit genetic information (RNA and DNA). |
| Nucleotide | A monomer that consists of three parts: A 5-carbon sugar, a phosphate group, and a nitrogenous base. |
| RNA | Ribonucleic acid contains ribose sugar. |
| DNA | Deoxyribonucleic acid contains deoxyribose sugar. |
| Proteins | Macromolecules that contain nitrogen, carbon, hydrogen, and oxygen. They are made of monomers called amino acids. |
| Amino acids | Compounds with an amino group and a carboxyl group that form proteins. |