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10-26
Question | Answer |
---|---|
What does the G2 phase of cell cycle do? | creates things needed for mitosis and replicates centrisomes |
What does cytokenesis do? | splits cytoplasm |
What is interphase? | G1,S, and G2 |
What are the 3 types of microtubules centrosomes produce? | 1. kinetochore-attatch kinetochore protein to sister chromatids 2. polar- reach from end to end 3. Aster- short little rays of sunshine |
What occurs in prophase of mitosis? | 1. Chromosomes condense 2. Chromosomes appear as sister chromatids 3. Nuclear envelope, Golgi, and ER break down 4. Spindle aparatus appears |
What occurs in prometaphase of mitosis? | Kinetochore microtubules connected and chromosomes begin to move toward middle |
What occurs in metaphase? | All chromatids in middle |
What occurs in anaphase? | Centromeres degrade, chromatids pulled to oposite ends, spindle poles move apart elongating cells |
What occurs in telephse? | Chromosomes have reached opposite poles, nuclear envelope,golgi, and ER reform, and spindle aparatus begins to disassemble |
What is cancer? | loss of control of the cell cycle |
What is the G1 checkpoint for? | Check for external need if no need goes into G0 phase |