| A | B |
|---|
| cell division | process by which a cell divides into two new daughter cells |
| mitosis | first stage--division of cell nucleus |
| cytokinesis | second stage--division of cytoplasm |
| chromosomes | carries genetic information in eukaryotic cells |
| chromatids | each chromosome consists of two identical |
| centromeres | point of attachment for chromatids |
| interphase | period of growth |
| cell cycle | series of events cells go through as they grow & divide |
| G1 phase | division of interphase during which most growth occurs |
| S phase | division of interphase during which chromosomes are replicated |
| G2 | shortest of the three phases of interphase; organelles replicated |
| 4 phases of mitosis | prophase, metaphase, anaphase & telophase |
| prophase | first and longest phase of mitosis 50-60% of total process |
| prophase | chromosomes become visible |
| centrioles | two structures in cytoplasm that organize the spindle |
| spindle | microtubule structure that divides chromosomes |
| metaphase | second phase of mitosis |
| metaphase | chromosome line up across middle of cell |
| anaphase | third phase of mitosis |
| anaphase | centromeres split allowing chromatids separate to opposite poles of cell |
| telophase | fourth & final phase of mitosis |
| telophase | nuclear envelope develops around tangle of chromosomes |
| cytokinesis | division of cytoplasm resulting in two new cells |
| cyclins | proteins responsible for regulating cell cycle |
| cancer | uncontrolled cell growth |
| stem cells | unspecialized cells that can differentiate into any type of cell |
