AP BIOLOGY REVIEW FOR TEST ON MITOSIS: SEC. 3 Know the relationship between malignant tumors and chromosomal abnormalities Know the three checkpoints of the cell cycle and their functions What do platelets release near an injury What protein is associated with kinase to form an catalytically active complex What protein maintains a constant level throughout the cell cycle that requires cyclin What triggers the passage past the G2 checkpoint At what stage is the cyclin component destroyed Which proteins show fluctuations in concentration during the cell cycle How does MPF turn itself off Know about density dependent inhibition What is the major problem with cancer cells in regard to the cell cycle Know how Cdk works, turned on turned off, always never--Why do some specialized cells divide infrequently Know the description of a cyclin What does anchorage dependence depend on How can you decide if a tumor has reached the malignant stage Know the worksheets handed out yesterday