| A | B |
| enzyme | a protein that acts as a catalyst, controlling the body’s chemical reactions |
| catalyst* | a chemical that speeds up a chemical reaction but is not used up |
| saliva | liquid made by the salivary glands, a.k.a. ”spit” |
| amylase | an enzyme that breaks down starch into sugar |
| protease | an enzyme that breaks down protein into amino acids |
| amino acids | fatty acids that make up proteins |
| lipase | an enzyme that breaks down fat molecules into fatty acids and glycerol |
| glycerol | an alcohol that reacts with fatty acids to produce fats and oils |
| lipids* | another word for fats |