Cell Cycle Control The Cell Cycle is controlled by varying levels of particular enzymes and requires several specific checkpoints to proceed. Go to Cell Cycle Game and wait for it to load. Be sure to click on the cells while you wait. Work your way through the simulation game and answer the following questions. If cell destruction occurs, begin again. 1. During which phase of the cell cycle does Checkpoint 1 occur? 2. What two conditions are checked before the cycle continues? 3. During which phase of the cell cycle does Chromosome duplication occur? 4. What happens in the game if you choose the wrong “next step”? 5. During which phase of the cell cycle does Checkpoint 2 occur? 6. What three conditions are checked before the cycle continues? 7. During which phase of the cell cycle does Checkpoint 3 occur? 8. What condition is checked before the cycle continues? 9. After watching the film of cell division, identify the cell as plant or animal and give a specific reason for this identification. Go to The Biology Project and read about the Cell Cycle. 10. What do CDK and MPF stand for? Go to this site which depicts fluctuating Cyclin levels and activity of MPF during the cell cycle. 11. Write a sentence or two that summarizes relationship of cyclin levels, activity of MPF and the events of the cell cycle. Go to Cycle animation and work through the animation and answer the following: 12. What is G0? Go to How Cancer Grows and work through the animation and answer the following: 13. What type of cells are affected by carcinomas? 14. In this animation, how long before the descendants of the mutated cells reach a population of 1 million? 15. Why is that rapidly dividing cells are more likely to become mutated? 16. What is the “basement membrane”? 17. What is angiogenesis and why is it important in the spreading of cancers? 18. How many cells can a 1 gram sized tumor release in a day? Go to Independent assortment , read the definitions and view the animation.
Pages to are hidden for
"Cell Cycle Control The Cell Cycle is controlled by"Please download to view full document