NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chemicals, ionizing radiation, and viruses that cause or promote the development of uncontrolable growth
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mutagen
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carcinogen
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cancer
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teratogen
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Explanation:
Detailed explanation-1: -Lifestyle factors (nutrition, tobacco and alcohol use, physical inactivity, etc.) Naturally occurring exposures (ultraviolet light, radon gas, infectious agents, etc.) Medical treatments (radiation and medicines including chemotherapy, hormone drugs, drugs that suppress the immune system, etc.) Workplace exposures.
Detailed explanation-2: -The mechanisms by which radiation may produce carcinogenic changes are postulated to include the induction of: (1) mutations, including alterations in the structure of single genes or chromosomes; (2) changes in gene expression, without mutations; and (3) oncogenic viruses, which, in turn, may cause neoplasia.
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