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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
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
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.
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.
Solution ID:350896 | This paper was updated on 26-Nov-2015Price : $30