| Term | Definition |
|---|
| divide | what must cells that are too big or old do or they will die |
| equally | The DNA of the cell must be divided this way |
| chromatin | long "relaxed" DNA strands wrapped around histones |
| chromatin | most of the cell's life DNA exists like this |
| histones | what are chromatin wrapped around |
| cell cycle | life cycle of a cell |
| cell cycle | the sequence of growth and division of a cell |
| cell cycle | has 3 main parts: interphase, mitosis, and cytokinesis |
| interphase | largest and longest stage of the cell cycle; about 90% of a cell's life |
| interphase | the cell grows in size and carries on metabolism |
| interphase | DNA is doubled to prepare for mitosis; centrioles replicate |
| mitosis | the period of nuclear division |
| mitosis | has 4 phases: prophase, metaphase, anaphase, and telophase |
| prophase | chromatin coils into chromosomes (sister chromatids and centromere) |
| prophase | nucleus disappears, centrioles move to opposite ends, spindle forms |
| spindle | fibers in the centrioles |
| chromatids | half of the chromosome (sister _) |
| metaphase | spindle pulls chromosomes to line up at the midline of the cell |
| metaphase | sister chromatids are getting ready to seperate |
| anaphase | centrioles split apart and sister chromatids seperate |
| anaphase | chromatids move toward opposite poles |
| telophase | chromosomes uncoil and become chromatin again |
| telophase | nuclear membrane reforms around the chromatin |
| cytokinesis | the cytoplasm of the original cell splits to form two new cells |
| cleavage sparrow | crack in the cell that splits the cell apart |
| cell wall | plasma membrane does not pinch in plant cells because of its |
| cell plate | a structure that forms across the middle of the cell |
| cell plate | both the plasma membrane and cell walls form on both sides of this |
| P.M.A.T. | used to help remember the 4 phases of mitosis |
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