| A | B |
| polar covalent bond | a bond between atoms with a partial charge |
| water | a polar compound |
| cohesion | molecules that stick to others like them |
| adhesion | molecules that stick to other types of molecules |
| 1-7 | acidic pH |
| 7-14 | basic pH |
| more hydronium ions | an acid |
| more hydroxide ions | a base |
| ionic bonds | bond between two charged atoms (ions) |
| carbohydrates | C plus H2O |
| monosaccharide | glucose |
| polysaccharide in pasta | starch |
| polysaccharide in plant cell walls | cellulose |
| lipids | contain C and H only |
| type of lipid made of glycerol and 3 fatty acids | triglyceride |
| type of lipid made of a glycerol with a phosphate and 2 fatty acids | phopholipid |
| lipid bilayer (membrane) | made of phospholipids |
| proteins | chains of amino acids |
| amino acids | contain NH2 an COOH |
| enzymes | type of protein which decreases the activation energy |
| nucleotides | made of a sugar, nitrogenous base and phosphate group |
| nucleic acids | made of chains of nucleotides |
| RNA | has a ribose sugar |
| DNA | has a deoxyribose sugar |
| ATP | transfers energy |
| Carbohydrate function | stores energy |
| Lipid function | keeps water in or out |
| steroids | lipid hormones |
| protein type | enzyme |
| water helps maintain homeostasis | because it is slow to lose or gain heat |