| A | B |
| Helicase | Unwinds the DNA and breaks the hydrogen bonds between base pairs |
| DNA Polymerase | Pairs nucleotides along the leading and lagging strand and proofreads base pairs |
| Okazaki fragments | Pieces of replicated DNA along the lagging strand |
| DNA Ligase | Bonds the Okazaki fragments |
| Replication | The self-duplication of DNA |
| S phase | The stage of the cell cycle where replication occurs |
| Leading Strand | The side of a DNA molecule that is replicated toward the replication fork |
| Lagging Strand | The side of a DNA molecule that is replicated away from the replication fork |
| replication fork | The point on a DNA molecule where the most recent base pairs have been "unzipped" for replication |