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cell division
Term | Definition |
---|---|
mitosis | The middle part of asexual cell division. Mitosis is the process used by the cell to form two nuclei inside the cell. |
asexual cell division | When a cell divides into two cells. These cells are exactly the same- a clone of each other. This is how all your body cells divide to make more cells for your body. |
interphase | The first part of asexual cell division. The cell grows and then the cell"twins" (replication) its chromosomes DNA which results in two sets of chromosomes. |
46 chromosomes | the amount of chromosomes in all Homo sapiens cells except the sex cells (sperm and egg) |
23 | the amount of chromosomes in sex cells of Homo sapiens. When a sperm and egg combine it will form the first cell of the Homo sapien with the correct 46 needed to be that species. 23 from mom,23 from dad. |
Cytokinesis | When the cell membrane in an animal cell pinches into two cells. When the cell wall is formed in the middle of the plant cell and it breaks into two cells. |
The Cell Cycle | The regular sequence of growth and division that cells go through. Interphase-Mitosis (prophase, metaphase, anaphase, telophase)- Cytokinesis. |
prophase | First step in Mitosis- chromosomes twin and nuclear membrane dissolves |
metaphase | Second step in Mitosis- Chromosomes are pushed by the spindle fibers to the middle of the cell. |
anaphase | Third step in Mitosis- Chromosomes separate to opposite ends of the cells- pulled by spindle fibers. |
telophase | Forth step in Mitosis. Nuclear membranes form around both sets of chromosomes resulting in two identical nuclei. End of Mitosis |
replication | Process where DNA is copied. |
chromosome | Double rod of chromatin attached together by the centromere. |
Daughter Cells | The two resulting cells that are made during cell division- cytokinesis stage |
meiosis | Cell division that only occurs in the reproductive organs of organisms. The resulting nucleus has half the correct amount of chromosomes in the sex cells. |
Parent Cell | A cell that has grown and is ready to divide. |