| A | B |
| prokaryotic cells | Cells without a nucleus. |
| eukaryotic cells | Cells with a nucleus. |
| cell division | The nucleus divides and the cytoplasm separates to form two new cells. |
| chromosomes | Structures in the nucleus that contain hereditary material (DNA). |
| Interphase | A cell grows and is getting ready for mitosis (the chromosomes double). |
| Mitosis | The process in which the nucleus divides and forms two identical nuclei. |
| cytokinesis | The division of the cytoplasm. |
| Prophase | During this stage in mitosis the chromosomes reappear and the nucleolus and nuclear membrane dissolve. |
| Metaphase | During this stage in mitosis the chromosomes line up across the middle of the cell. |
| Anaphase | During this stage in mitosis the chromosomes are pulled to the opposite ends of the cell. |
| Telophase | During this stage in mitosis two new cells are formed. |
| asexual reproduction | A new organism is produced that has the same DNA makeup as the parent cell. |
| fission | When a prokaryotic organism divides into two identical organisms. |
| budding | Asexual reproduction in which a new organism grows from the body of a parent organism. |
| regeneration | When a whole new organism grows from a piece of an organism. |
| spindle fibers | thread-like fibers that connect centrioles to centromeres. |
| centrioles | structures found in the nucleus where spindle fibers attach |
| centromeres | A structure that connects duplicated chromosomes. |