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Cancer Catalyst What is the purpose behind mitosis? Fill in the blanks: In mitosis, _____cells divide ___ time(s) to produce ___ new cells that are __________. What is cancer? How do people get cancer? Why is cancer harmful? Write in complete sentences! Don’t talk during the Catalyst! Objectives By the end of today, SWBAT… Describe the causes, symptoms, and treatments of cancer Agenda Cancer Causes Symptoms Treatment Game: Rally-Coach National Cancer Institute reading Exit Question What is cancer? Key Point #1: Cancer is a disease of mitosis that causes uncontrolled cell growth Cells divide over and over without stopping Produces a mass of cells called tumors Not all tumors are cancerous Not all tumors are caused by cancer Benign tumors are NOT cancerous Do not spread, usually harmless Malignant tumors ARE cancerous Grow rapidly, spread through the body and invade normal tissue How does cancer kill? Key Point #2: Cancer cells steal nutrients from normal cells, and may stop organs from functioning Steal food from other cells, starving them Tumors press on organs Cancerous organs do not do their job properly How is cancer caused? Key Point #3: Cancer can be genetic, or caused by exposure to chemicals, viruses, or other factors Genetic: DNA has a mutation (mistake) Chemicals: smoke, alcohol, deep fried foods, etc. Viruses: HPV (cervical cancer), Hepatitis B (liver cancer), HIV (skin cancer) Other factors: Sunlight, old age How do we treat cancer? Key Point #4: The three most common treatments for cancer are radiation therapy, chemotherapy, and surgery Radiation Radiation therapy = use radiation to kill cancer cells kills all cells… including normal ones! How do we treat cancer? Key Point #4: The three most common treatments for cancer are radiation therapy, chemotherapy, and surgery Chemotherapy But = chemicals kill rapidly growing cells some rapidly growing cells aren’t cancerous! How do we treat cancer? Key Point #4: The three most common treatments for cancer are radiation therapy, chemotherapy, and surgery Surgery If = cut out the cancerous cells the cancer has already spread throughout the body, you can’t cut it out from everywhere Rally-Coach Work in partners 2 sets of questions: A and B Alternate reading and answering questions with your partner COACH each other on the answers—don’t just give them away if your partner doesn’t know them If your partner gets the question wrong, ask them again at the end Homework Key Point Wrap-Up Key Point #1: Cancer is a disease of mitosis that causes uncontrolled cell growth Key Point #2: Cancer cells steal nutrients from normal cells, and may stop organs from functioning Key Point #3: Cancer can be genetic, or caused by exposure to chemicals or viruses Key Point #4: The three most common treatments for cancer are radiation therapy, chemotherapy, and surgery Exit Questions How are mitosis and cancer related? Describe two causes of cancer Describe one way that cancer can kill its host Which treatment for cancer do you think is most effective? Why? Write in complete sentences! Don’t talk during the Exit Question!