Question

1. What is the difference between a malignant and benign tumor?

A. A malignant tumor invades and colonizes other tissues, while a benign tumor does not.

B. A benign tumor can be treated, while a malignant tumor cannot.

C. A benign tumor grows from a single cell, whereas a malignant tumor arises from multiple cells, making it more difficult to eradicate.

D. A malignant tumor proliferates in defiance of normal constraints, while a benign tumor does not.E. A malignant tumor grows into a large destructive mass, whereas a benign tumor remains very small.

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2. Which type of mutation would not typically convert a proto-oncogene into an oncogene?

A. mutation in the coding sequence that leads to the production of a hyperactive protein

B. gene amplification

C. chromosomal rearrangement that leads to the production of a hyperactive protein

D. chromosomal deletion of the region containing the proto-oncogeneE. chromosomal rearrangement that leads to overproduction of the normal proto-oncogene protein

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3. Which type of mutation would not be involved in the inactivation of a tumor suppressor gene?

A. loss-of-function mutation in tumor suppressor gene

B. silencing of the gene’s activity by epigenetic changes

C. duplication of the gene

D. chromosomal deletion of a region containing the tumor suppressor gene

E. loss of a whole chromosome containing the tumor suppressor gene

Answer 1