alleryWhich of the following is a known carcinogen leading to cancer?
ARegular exercise done routinely for well-being
BA balanced diet rich in fruits and vegetables
CIonising radiation such as X-rays, γ-rays and UV
DFresh outdoor air in an unpolluted environment
Answer & Solution
Correct answer: C. Ionising radiation such as X-rays, γ-rays and UV
1. Carcinogens are agents that promote uncontrolled cell division leading to cancer.
2. Ionising radiations (X-rays, γ-rays, UV) damage DNA and are established carcinogens.
3. Non-ionising radiation (visible light, radio waves) is generally not carcinogenic.
4. Chemical carcinogens include tobacco tar and asbestos among others.
_Source: syllabus Biology, Ch 7 "Human Health and Disease", §7.4_
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