| A | B |
|---|
| element | a pure substance |
| compound | a molecule with more than one element |
| carbohydrate | a molecule used for energy, includes sugars and starches |
| polysaccharide | a molecule made of many simple sugars strung together |
| lipid | a molecule that won't dissolve in water |
| unsaturated fatty acid | a lipid with double bonds that cause bends in the molecule |
| saturated fatty acids | A lipid with no double bonds. Is liquid at room temperature. |
| DNA | deoxyribonucleic acid -a polymer of nucleic acid |
| double helix | the shape of DNA |
| complimentary base pair | The base pairs in a DNA molecule that only bond to each other |
