| A | B |
| Nucleus | The center of an atom |
| Protons and Neutrons | These make up a nucleus |
| Electrons | Negatively charged particles in atoms. |
| Ionic Bonds | In a(an)____, electrons are transferred between atoms |
| Ionic and Covalent Bonds | Chemical Bonds found in compounds |
| Carbohydrates | The Main source of energy for living things |
| Proteins | Help carry out chemical reactions |
| Lipids | Sugar and starches |
| Sugars | Carbohydrates such as Glucose or Fructose |
| RNA and DNA | Two basic kids of nucleic acids |
| Nucleic Acids | Contain Hydrogen, Oxygen, Nitrogen, Phosphorus, and carbon |
| Proteins | transport substances in and out of cells. |