Multiple choice

Which of the following characterises melanin?

  1. It enhances the penetration of UV radiation through the skin.

  2. Skin may vary frequently in the amount of melanin it contains.

  3. Individuals with high concentration of melanin in their skin are at a greater risk for skin cancer.

  4. It enhances the penetration of infrared radiation through the skin.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Ultraviolet radiation from the Sun stimulates melanocytes in the skin to produce more melanin, which in turn makes the skin browner. This seasonal tanning is most noticeable among light complexioned people. It has the effect of shielding the inner skin.

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