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Which of the following is characteristic of malignant tumors? |
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Gain-of-function mutations in which of the following genes typify colorectal carcinomas? |
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During metastasis cells may undergo an epithelial-to-mesenchymal transition whereby there is a(n) |
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Loss of cell-cell adhesion |
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Which of the following promotes angiogenesis? |
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In females, all the cells in a tumor have the same inactive X chromosome. The reason for this is that |
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all of the cells in a tumor are derived from a single progenitor cell. |
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Which of the following is a tumor-suppressor gene? |
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Which of the following is a proto-oncogene? |
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Germ-line mutations in which of the following has/have been implicated in hereditary cancers? |
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Hereditary cancers typically possess loss-of-heterozygosity in |
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A loss-of-function mutation in which of the following would have the same effect as a gain-of-function mutation in Ras? |
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Burkitt's lymphoma results from the overproduction of |
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Which of the following proteins belong to the control system that regulates cells past a certain point in late G1 (START)? |
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A gain-of-function mutation in which of the following will bypass restriction point controls? |
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The human papillomavirus E7 protein inhibits the function of |
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Micro-RNAs are a new class of oncogenic factors because they function |
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tumor supressors and oncogenes |
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Direct-acting carcinogens are those that |
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are mainly reactive electrophiles. |
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contains reverse transcriptase. |
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Exposure to benzo(a)pyrene is most frequently associated with which type of cancer? |
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The first line of defense against point mutations is |
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