Ultraviolet radiations cause:
Correct answer: D. All of the above
- A. Severe Crop Damage
- B. Decay of Microorganisms
- C. Sunburn, Blindness, Skin Cancer
- D. All of the above
Explanation
Explanation:Ultraviolet radiation can cause severe crop damage, decay of microorganisms, sunburn, blindness, and skin cancer. UV radiation can cause severe damage to crops by disrupting the process of photosynthesis and causing leaves to wilt and die. This can lead to significant losses in crop yields. UV radiation can damage the DNA of microorganisms, leading to their death and decay. UV radiation can penetrate the skin and cause DNA damage in skin cells, leading to sunburn, premature aging, and an increased risk of skin cancer. It can also damage the eyes, leading to cataracts and other eye conditions.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Biological and Medical Uses of Radiation
Radiation in medicine includes X-rays and gamma rays for imaging, radioactive tracers for diagnosis, and controlled radiation for destroying cancerous tissue. The topic also covers CT scans, PET imaging, radiotherapy, sterilisation, half-life and dosage, alongside biological damage, shielding and the need to balance diagnostic or therapeutic benefit against exposure.
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