The Cell Cycle and Cancer





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Published on May 23, 2016

The Cell Cycle and Cancer
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Free PowerPoint Presentations for teaching and learning

1. Click on picture for cell cycle animation – will go to www.cancerquest.org)
2. Use alt-tab keys to go between website and power point presentation.
3. Click on blank space to proceed to next slide.)
There are several factors that regulate the cell cycle and assure a cell divides correctly.

1.Before a cell divides, the DNA is checked to make sure it has replicated correctly. (If DNA does not copy itself correctly, a gene mutation occurs.
2. Chemical Signals tell a cell when to start and stop dividing.

(Target cells animation: click on go sign)
Neighboring cells communicate with dividing cells to regulate their growth also.
DNA mutations disrupt the cell cycle.
Mutations may be caused by: 1. radiation 2. smoking 3. Pollutants 4. chemicals 5. viruses
Due to DNA mutations, cancer cells ignore the chemical signals that start and stop the cell cycle.
Due to DNA mutations, cancer cells cannot communicate with neighboring cells. Cells continue to grow and form tumors.
Treating Cancers

Cancer treatments include drugs that can stop cancer cells from dividing.


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