| 1.Label 5' and 3' ends of each stand. | |
| Top left Bottom right Bottom left Top right | |
| 2. Is the last base on the coding strand a pyrimidine or a purine? | |
| 3. What atom is the white arrow pointing at? | |
| 4. What atom is the yellow arrow pointing at? | |
| 5. What atom is the orange arrow pointing at? | |
| 6. What atom is the green arrow pointing at? | |
| 7. Which carbon of deoxyribose is the blue arrow point at? | |
| 8. Which carbon of deoxyribose is the pink arrow point at? | |
| 9. Is groove is at the top of this image the major groove or the minor groove? | |