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Cell Growth

Cell Growth. Will Cells live forever?. Some cells die because they have been damaged and cannot be repaired Cells also die as part of normal body functioning Called APOPTOSIS - death of cells that are no longer useful.

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Cell Growth

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  1. Cell Growth

  2. Will Cells live forever? • Some cells die because they have been damaged and cannot be repaired • Cells also die as part of normal body functioning • Called APOPTOSIS - death of cells that are no longer useful

  3. Scanning electron micrograph showing normal cells surrounding a cell undergoing apoptosis

  4. Cancer Cells • These cells divide uncontrollably • Cancer cells develop when a change occurs in the cell that affects how that cell divides. • When a cell’s DNA is changed, it is known as a mutation.

  5. Causes of cancerous mutations • Some viruses are cancer causing • Environmental agents, such as ultraviolet radiation or cigarette smoke, can cause cell mutations • Some mutations are inherited

  6. Comparison of normal cells vs. Cancer cells

  7. Non-cancerous vs Cancerous cells Non-cancerous Cancerous

  8. Quick Lab • Complete Activity A9 on page 36 of your textbook

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