Which of the following enzymes listed below is responsible for cancer cells' ability to prevent aging of the cells and contributes to cellular immortality that is so characteristic of this disease process?
A)
Oxidoreductase
B)
Telomerase
C)
Hydrolase
D)
Isomerase
Ans:
B
Feedback:
Some cells have telomerase, an enzyme that "rebuilds" telomeres and lessens or prevents shortening. Cancer cells have high levels of telomerase, which prevents senescence and contributes to the cellular immortality that characterizes cancer.
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