Question

which of the following may result in cancer?
i. radiation exposure
ii. chemicals in cigarettes
iii. ultraviolet light
iv. asbestos exposure
i, ii, iii, & iv
i & iv
i only
i & ii

Explanation:

• Radiation exposure: High - level radiation can damage DNA, leading to mutations that may cause cancer.
• Chemicals in cigarettes: Cigarettes contain many carcinogenic chemicals (e.g., benzopyrene) that can cause DNA damage and cancer over time.
• Ultraviolet light: UV light (especially UVB) can damage the DNA in skin cells. Cumulative exposure can lead to skin cancers like melanoma.
• Asbestos exposure: Asbestos fibers can cause inflammation and DNA damage in the lungs (and other tissues in some cases), increasing the risk of lung cancer and mesothelioma.

Answer:

I, II, III, & IV