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Science Midterm
Midterm Review
Term | Definition |
---|---|
Interphase | The first stage of the cell cycle. Period before cell division occurs. A cell grows to it's mature size, makes a copy of it's DNA called replication divide Inter=Between The cell doubles in size and produces all structures needed for cell division |
Mitosis *Metaphase* | Chromosomes line up in the middle of the cell. Spindle fibers attach to the centromere and the centriole. |
Mitosis *Anaphase* | The chromosomes split. The "sister" chromatids separate to each end of the cell. Spindle fibers, anchored by the centrioles begin to push the cell apart. |
Mitosis | The cells nucleus divides into 2 new nuclei. 1 copy of the DNA is distributed into each of the two daughter cells |
Mitosis Phases Phases | Prophase, Metaphase, Anaphase, and Telophase: PMAT |
Mitosis *Prophase* | Chromosomes form. Centrioles move to opposite ends of the cell. Spindle fibers begin to appear. Nuclear membrane begins to disappear. |
Mitosis *Telophase* | Cells begin to split. Nuclear membrane begins to reform on each side of the cell. |
Cytokinesis Cytokinesis | Cell membrane pinches in center of the cell. Cells split forming two genetically identical daughter cells, each cells begins to grow to start the process over again. |