Science Notebook - Student Edition

Main Idea Details

Cellular Reproduction 95

Normal Cell Cycle

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on page.

Abnormal Cell

Cycle

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on page.

Summarize how cells regulate the cell cycle. Choose from the list

of words to complete the paragraph.

• checkpoints • cyclin-dependent kinases • G 2 stage


• cyclin/CDK • cytokinesis • mitosis


• cyclins • G 1 stage • S stage

Cells use and

to control the cell cycle. Different combinations of

start the cell cycle at different. The cell also uses

to monitor the cycle for quality control. In

, the cell checks the DNA for damage. If there

is any damage, the cycle won’t proceed to.

In , if the spindle apparatus is malfunctioning, the

cycle won’t proceed to.

Sequence the causes and effects of cancer by completing the flow

chart below.

Cancer is

Cancer is the result of

Cancer cells cause damage by

Cells lose control when

Identify four environmental factors that cause cancer.

Section 9.3 Cell Cycle Regulation (continued)

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