| A | B |
|---|
| Deoxyribonucleic acid (DNA) | nucleic acid that contains the sugar deoxrybose |
| protein | macromolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed nby the body for growth and repair and to make up enzymes |
| amino acie | compound with an amino group (-NH2) on one end and a carboxyl group (-COOH) on the other group |
| chemical reaction | a process that changes, or transforms one set of chemicals into another |
| reactant | elements or compounds that enter into a chemical rection |
| product | the elements or compounds produced by a chemical reaction |
| activation energy | the energy that is needed to get a reaction started |
| catalyst | a substance that speeds up the rate of a chemical reaction |
| enzyme | a protein that acts as a biological catalyst |
| substrate | the reactant of enzyme-catalyzed reaction |
