| Term | Definition |
| Chromatid | One of two identical "sisters" parts of a duplicated chromosome. |
| Centromere | Area where the chromatids of a chromosome are attached. |
| Interphase | Period of the cell cycle between cell division. |
| Cell Cycle | Series of events that cells go through as they grow and divide. |
| Mitosis | Part of eukaryotic cell division during which the cell nucleus divides. |
| Prophase | First and longest phase of mitosis, during which the chromosomes become visible and the centrioles seperate and take up positions on the opposite sides of the nucleus. |
| Centriole | One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope. |
| Spindle | Fan like microtubule structure that helps seperate the chromosomes during mitosis. |
| Metaphase | Second phase of mitosis, during which the chromosomes line up across the center of the cell. |
| Telophase | Fourth and final phase of mitosis, during which the chromosomes begin to disperse into a tangle of dense material. |
| Anaphase | Third phase of mitosis, during which the chromosomes pairs seperate and move toward opposite poles. |
| Cytokinesis | Division of the cytoplasm during cell division. |