10.3 Regulating the Cell Cycle

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Copyright Pearson Prentice Hall
Regulating the Cell Cycle
KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
Copyright Pearson Prentice Hall
10.3 Regulating the Cell Cycle
KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
Copyright Pearson Prentice Hall
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Copyright Pearson Prentice Hall
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KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
10.3 Regulating the Cell Cycle
KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
Copyright Pearson Prentice Hall
Copyright Pearson Prentice Hall
Regulating the Cell Cycle
KEY CONCEPT Cell cycle regulation is necessary for healthy growth.
Presentation transcript:

10.3 Regulating the Cell Cycle p286

Q: How is the cell cycle regulated? A: The cell cycle is controlled by regulatory proteins both inside & outside the cell.

Regulatory Proteins Internal regulators External regulators Cyclin-regulates the timing of the cell cycle. Normally, when cells touch, they stop growing. Growth factors-one of a group of external regulatory proteins that stimulate the growth and division of cells.

Apoptosis-Process of programmed cell death.

Cancer: Uncontrolled Cell Growth p53 gene Q: How do cancer cells differ from other cells? A: Cancer cells do not respond to the signals that regulate the growth of most cells. As a result, the cells divide uncontrollably.

Cancer: Uncontrolled Cell Growth Cancer-does not respond to the signals that regulate the growth of most cells. Tumor-mass of cancer cells. Caused by defects in the genes that regulate cell growth & division (p53 gene).

WB p150-152 Skip #9, 10, 12, 14

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