| A | B |
| cell division | The process by which a cell divides into two new daughter cells. |
| mitosis | A part of eukaryotic cell division during which the nucleus divides. |
| cytokinesis | The division of the cytoplasm during the cell division. |
| chromatid | One of two identical "sister" parts of a chromosome. |
| centromere | The area where the chromatids of a chromosome are attached. |
| interphase | The period of the cell cycle between cell divisions. |
| cell cycle | A series of events that cells go through as they grow and divide. |
| prophase | The phase in mitosis where chromosomes become visible, the centrioles migrate and the nuclear membrane breaks down. |
| centriole | One of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope, involved in cell division. |
| spindle | A fanlike microtubule structure that helps separate chromosomes during mitosis. |
| metaphase | The phase of mitosis where chromosomes line up at the cell's equator. |
| anaphase | The phase of mitosis where sister chromatids are separated. |
| telophase | The phase of mitosis where chromosomes begin to unwind into chromatin. |
| cyclin | One of a family of closely relater proteins that regulate the cell cycle in eukaryotic cells. |
| cancer | A disorder in which some of the body's own cells lose the ability to control growth. |