The Increased Levels of Telomerase Associated with Many Tumor Cells

question 55

Multiple Choice

The increased levels of telomerase associated with many tumor cells likely promote cancer by:

• A) enhancing levels of DNA repair so that cells remain normal and have stable genomes and thus would be able to replicate their DNA and divide more often.
• B) promoting the efficiency of the spindle-assembly checkpoint.
• C) reducing the expression of several oncogenes.
• D) allowing cells to continue to divide when normally chromosomes should shorten beyond a point where division would be no longer possible.
• E) decreasing the number of epigenetic changes that would promote cancer.

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