Name ______________________________ Period ______
CELL REPRODUCTION
The Cell Cycle and Mitosis
1. Define cell division:
________________________________________________________________________
________________________________________________________________________
2. Three types of cell division:
a. Prokaryotes: ____________________________
b. Eukaryotes: ____________________ and _________________
3. Two main reasons why cells divide:
a. __________________________________: if cells grows without limit “information
crisis” develops; DNA cannot serve the needs of increasing size of cell
b. __________________________________: food and oxygen have to cross membrane
very quickly, waste must go out, if cell too large this occurs too slowly (SA:Vol Ratio
problems)
PROKARYOTIC CELL DIVISION
4. Explain binary fission.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
5. The offspring are ______________________________ to the parent cell.
THE CELL CYCLE
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CELL CYCLE- INTERPHASE
6. Define interphase:
________________________________________________________________________
7. Three phases:
a. ___________________
- Cell increases in size
b. ___________________
- Replication of DNA (chromosomes)
c. ___________________
- Organelles double
- New cytoplasm forms
- All other structures needed for mitosis form
What are chromosomes?
8. What are chromosomes made up of? ________________
9. When are the chromosomes copied? ________________________
10. Label the chromosome below:
EUKARYOTIC CELL DIVISION
11. Where is the DNA found? ________________________________
12. What happens during the cell cycle?
________________________________________________________________________
13. What is purpose of mitosis? _____________________________________
14. Identify the phases of the eukaryotic mitosis.
a. _________________________
b. _________________________
c. _________________________
d. _________________________
FOLLOWED BY:
e. _________________________
Cytoplasm division, forming daughter cells
15. The offspring are ______________________________ to the parent cell.
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Life Cycle of the Cell
16. What is ensured by the steps of mitosis?
________________________________________________________________________
________________________________________________________________________
MITOSIS
17. What is the purpose of this process?
________________________________________________________________________
________________________________________________________________________
PHASES OF MITOSIS:
(1) PROPHASE
a. ___________________________________________
b. ___________________________________________
c. ___________________________________________
d. ___________________________________________
(2) METAPHASE
a. ___________________________________________
b. ___________________________________________
(3) ANAPHASE
a. ___________________________________________
b. ___________________________________________
c. ___________________________________________
(4) TELOPHASE
a. ___________________________________________
b. ___________________________________________
c. ___________________________________________
FOLLOWED BY:
(5) CYTOKINESIS
a. __________________________________________
b. __________________________________________
c. __________________________________________
Cells return to interphase…
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Control of the Cell Cycle
18. Explain how the cell cycle is controlled.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
19. The diagram below explains what occurs at each checkpoint.
CANCER CELLS
20. Explain why cancer cells cause tumors to form?
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
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