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Breast cancer and it's treatment

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13. You are a physician. Following a PBS special on breast cancer, four women come to visit you;because each has discovered a lump in her breast. In which of the following women would it be;LEAST likely that the lump was cancerous?;A. Heather is 22. She was a junior in high school when she got her first period. She has a;two-year-old daughter.;B. Amy is 30. Her older sisters both have breast cancer.;C. Susan is a 60-year-old woman who is a lawyer. She waited to start her family until she;was 30 years old. She reached menopause last year.;D. Barbara is 57. She is greatly overweight. and drinks (alcohol) heavily. She justifies her;eating and drinking by explaining that she is going through menopause and has swings in;emotions.;14. GRN163L is a drug that prevents telomerase from acting. GRN163L might prove to be a;good cancer treatment because preventing telomerase activity;A. would prevent cancer cells from breaking cell anchors;B. would cause the tumor cells to starve to death;C. would allow the cancer cells to divide indefinitely;15. Which of the following is an INCORRECT statement about the causes of cancer?;A. Genetic mutations cause cancer.;B. Genetic mutations can be caused by environmental influences, including radiation;and certain chemicals.;C. A healthy immune system can help prevent cancer.;D. All viruses cause cancer.;3;16. The processing of oxygen can produce harmful chemicals called free radicals, which can;damage the cells genetic information (cause mutations). Antioxidants, such as vitamins C, E;and beta-carotene, prevent the formation of free radicals. Based on what you have learned;about the causes of cancer, which is the most likely explanation for the cancer-preventing;action of foods that contain large amounts of antioxidants?;A. They inhibit the formation of blood vessels.;B. They trigger cell death in cancer cells.;C. They form cell attachments that are exceptionally strong.;D. They prevent18. Your sisters breasts get larger and are tender before she gets her period each month. She;asks you why this happens. You CORRECTLY explain to her that;A. she most likely has fibrocystic breast disorder;B. much of the breast is composed of muscle and estrogen causes muscle contraction;C. it is caused by a fibroadenoma;D. none of the above mutations in tumor-suppressor genes and proto-oncogenes.

 

Paper#15183 | Written in 18-Jul-2015

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