| A | B |
| Basic Unit of Life | Cell |
| Organisms made of only 1 Cell | unicellular |
| Organisms made of more than 1 cell | multicellular |
| Tiny organs that run the cell | organelles |
| Command Center of the cell; DNA is located here | nucleus |
| thread-like bundles inside the nucleus | Chromosomes |
| The number of chromosomes in a "normal" human | 46 or 23 Pairs |
| The number of chromosomes in your sex cells | 23 |
| The number of chromosomes in ALL yours cells EXCEPT your sex cells | 46 |
| Section of chromosomes that contain the code for specific traits | genes |
| The written code of life; the material that transmits heredity | Deoxyribonucleic Acid |
| The sugar in DNA | Deoxyribose |
| The number of Bases in DNA | 4 |
| Adenine and Guanine | Purines |
| Cytosine and Thyamine | Pyrimidines |
| The shape of DNA (twisted ladder) | Double Helix |
| Scientists given credit for discovering the structure of DNA | Watson & Crick |
| 3 parts of the DNA structure | Sugar, Phosphate, & Bases |
| Base Pairs | G with C and A with T |