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Mitosis and Cancer The Cell Cycle Under normal conditions instructions in a cell’s DNA control its rate of cell division. Suicidal Tendencies: A cell may destroy itself it something has gone wrong or if the genetic information is damaged. Cell Cycle Gone Wild! When cells begin to divide uncontrollably the result is cancer. Cancerous cells interfere with surrounding cells and disrupt the normal functioning. Mitosis Mishap Cancer cells continue to divide indefinitely. They are stuck in the mitosis part of the cell cycle; always dividing without replicating and preparing the cells DNA. The result is more and more cells with altered DNA that are no longer able to function properly. Brain Pop: Cancer http://www.brainpop.com/health/diseasesinj uriesandconditions/cancer/ Why is Cancer Dangerous? In some cases the excess cells can form a lump, or tumour. In other cases the cells travel to other areas of the organism. These cells gobble up oxygen and nutrients and crowd out normal functioning cells robbing them of food. All cancers are caused by mutations in the genes that control cell division. A carcinogen is any substance or energy that causes such a mutation. Mitosis Questions: Page 23 in your text book. Complete questions 1, 2, 4, 6 Complete in full sentences and pass them in.