5
practice examMultiple Choice

Practice Exam

Question 5 • Biology

Which accurately describes the relationship between cancer risk and exposure to mutagens?

Answer
A
Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well.
B
Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutation decreases as well.
C
Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations decreases considerably.
D
Cancer risk decreases when a person is exposed to mutagens because the risk of DNA mutations increases considerably.

Explanation

Mutagens are agents that can cause changes in DNA. Greater exposure to mutagens raises the chance that DNA mutations will occur; some mutations can disrupt normal controls on cell growth and contribute to cancer. Therefore, cancer risk increases as mutagen exposure and mutation risk increase, making “Cancer risk increases when a person is exposed to mutagens because the risk of DNA mutations increases as well” correct.

AI-written and checked against the verified answer.

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