Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Regulating Cells

480 views

Published on

  • Be the first to comment

  • Be the first to like this

Regulating Cells

  1. 1. Regulating the Cell Cycle Controlling Cell Division Page 250; 10-3
  2. 4. <ul><li>Apoptosis – programmed cell death </li></ul>
  3. 5. Cancer is a cell division disorder <ul><li>Cancer often works like this… </li></ul><ul><li>Some DNA becomes mutated  this leads to the ‘command’ that stimulates cells to divide even though they are supposed to wait… </li></ul><ul><li>[growth promoting proteins get ‘over-made’] </li></ul><ul><li>Genes that inhibit cell division are called tumor suppressors. (these are good) </li></ul><ul><li>Mutations can ‘inactivate’ these genes and the cell cycle “brake” is removed. Control proteins become inactivated. (this is bad) </li></ul><ul><li>There is nothing to stop the cell from rapid and out of control division. MANY CANCER CELLS HAVE MUTATIONS IN THEIR TUMOR-SUPRESSOR GENES. </li></ul>
  4. 7. Page 252

×