What is the difference between the centromere and the kinetochore?
CHAPTER 12: THE CELL CYCLE
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Order Paper Now1. Define genome:
2. What is the difference between DNA in the chromatin form and the chromosome form? What form is DNA in during most of the cell cycle?
3. What is the difference between the centromere and the kinetochore?
4. What happens during each of these phases of the cell cycle?
G1:
S:
G2:
M:
5. The mitotic spindle is mainly made of what type of protein fiber?
6. How does cytokinesis differ between plant and animal cells?
7. Is binary fission truly mitosis? What type of organisms use binary fission for reproduction? Is this process sexual or asexual?
8. Draw/depict the phases of mitosis from prophase to the end of cytokinesis for an animal cell containing a total of six chromosomes.
9. What is the cell cycle control system and why is it important?
10. What happens to most mammal cells when they reach the G1 checkpoint?
11. Explain how MPF helps to regulate the cell cycle. (See Fig 12.16)
12. What is a growth factor? Provide an example from the chapter.
13. What does cancer have to do with the cell cycle?
14. Explain why each of the following would undergo mitosis:
An early embryo:
An amoeba:
Skin cells:
A broken bone:
15. How is prokaryotic DNA different from eukaryotic DNA?
16. Are the daughter cells produced by mitosis clones of the parent cell?
17. When mitosis is used for reproduction, is it sexual or asexual? What type(s) of organisms use mitosis for reproduction?
