Question 13

What is the cell cycle? How does the cell cycle assure genetic continuity and allow for even distribution of genetic information? And, how is the cell cycle regulated, and how can aberrations in the cell cycle lead to tumor formation? [Chapter 12]

The Key Roles of Cell Division (pages 215-217)

1. Cell division functions in reproduction, growth and repair.

2. Cell division distributes identical sets of chromosomes to daughter cells.

The Mitotic Cell Cycle (pages 217-224)

1. The mitotic phase alternates with interphase in the cell cycle.

2. The mitotic spindle distributes chromosomes to daughter cells.

3. Cytokinesis divides the the cyctoplasm.

4. Mitosis in eukaryotes may have evolved from binary fission in bacteria.

Regulation of the Cell Cycle (pages 224-229)

1. A molecular control system drives the cell cycle.

2. Internal and external cues help regulate the cell cycle.

3. Cancer cells have escaped the control of the cell cycle.

John C. Murphy	Science
Phone:  (815) 436-3200, ext. 2120
jmurphy@learningcommunity202.org

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