| A | B |
|---|
| organ | group of tissues working together |
| cell division | process in which one cell divides into two cells |
| mitosis | duplication and division of a cell's nucleus |
| chromatin | threadlike coils of chromosomes |
| organ system | group of organs working together |
| organism | group of organ systems working together |
| telophase | fifth phase of cell division when mitosis is complete |
| tissue | group of cells working together |
| interphase | first phase of cell division when chromosomes are copied |
| prophase | second phase of cell division when mitosis begins |
