Summary of Cell Cycle and its Regulation AP Biology

Review of Cell Cycle

Sample Question If the S phase were eliminated from the cell cycle, the daughter cells would Have half the genetic material found in the parent cell Be genetically identical to each other Be genetically identical to the parent Synthesize the missing genetic material on their own

Sample Question Select from one of the choices that best fits the description Telophase Interphase Cytokinesis Prophase Anaphase Descriptions Cytokinesis during this final stage of mitosis Division of cytoplasm Sister chromatids separate Genetic material replicates

Checkpoints

Sample Questions After which of the following checkpoints in the cell cycle is the cell first committed to divide? G2 checkpoint M checkpoint Interphase checkpoint G1 checkpoint MPF checkpoint

Maturation Promoting Factor (MPF) Composed of cyclin bound to a cyclin dependent protein kinase CDK constant concentration Active only when bound to cyclin Cyclin Concentration varies during the cell cycle

Changes in Cyclin Concentration

Practice Problem Look at Figure 7.9 in your handout and read through the investigation What was the purpose of radioactive labeling Why would you expect more radioactive labeling of DNA during S phase What were the percentages of cells in S phase in each of three experiments provided? What does that suggest in terms of control of cell cycle?

Questions?????