| A | B |
| Polar | Molecule with negative charge on one side and positive charge on the other |
| hydrogen bond | weak chemical bond between hydrogen atom in one molecule and a negatively charged region of another molecule |
| cohesion | The attraction of water molecules to each other |
| adhesion | The attractive force between unlike forces |
| capillarity | Allows water to creep up the interior of a vessel |
| organic compounds | Derived from living things and contains carbon |
| condensation reaction | Reaction (dehydration synthesis) where one molecules of water is produced |
| hydrolysis | The splitting of a molecule through reaction with water |
| adenosine triphosphate | Energy source for metabolic processes |
| carbohydrate | Organic compound organisms use for energy in the cell |
| monosaccharide | Simple sugar – fructose or glucose |
| isomer | One or more compounds that differ in structure but not in molecular composition |
| disaccharide | Double sugar – 2 monosaccharides |
| polysaccharide | Complex – 3 or more monosaccharides |
| proteins | Organic compound of polypeptides which are formed from amino acids |
| amino acids | A formation from two amino acids bonded together by means of a condensation reaction |
| substrate | The reactant in any enzyme-catalyzed reaction |
| lipids | Organic molecule that is insoluble in water (fats and steroids) |
| fatty acids | Monomer that is part of most lipds |
| hydrophilic | Water loving – attracted to water |
| hydrophobic | Water hating – repelled from water |
| triglyceride | Lipid made of three fatty-acid molecules and one glycerol molecule |
| phospholipids | Complex lipid having two fatty acids joined by a molecule of glycerol |
| steroid | Lipid in which the molecule is composed of four carbon rings |
| nucleic acid | Organic molecule, NA or RNA that stores and carries genetic info |
| ribonucleic acid | Nucleic acid composed of a single strand – contains ribose instead of uracil |
| nucleotide | Part of DNA or RNA that has nitrogen base, a sugar, and a phosphate group |
| wax | long fatty-acid chain joined to a long alcohol chain - highly water proof |