11.What is the G0 phase of the cell cycle? Which factors determine whether a cell enters G0? Can cells leave G0?
12.What are cell cycle regulators?
b.Inhibitory proteins are encoded by P53.Examples include: cellular tumor.13.Cancer is the result of an improperly regulated cell cycle. Describe two reasons why cellscan form tumors.
14.In some types of colon cancer, stem cells have a mutation in the APC gene. What happensif the APC gene is mutated?
15.Normally, proto-oncogenes stimulate the cell cycle. What are oncogenes and how do theyaffect the cell cycle?
16.Normally, tumor suppressor genes inhibit the cell cycle. How do mutated tumor suppressor genes affect the cell cycle?