How is melanin protective?Multiple choice question.prevents loss of water from the skinfixes mutations in DNAprevents loss of heat from the skinabsorbs UV radiation from sunlight
Question
How is melanin protective?Multiple choice question.prevents loss of water from the skinfixes mutations in DNAprevents loss of heat from the skinabsorbs UV radiation from sunlight
Solution
Melanin is protective because it absorbs UV radiation from sunlight. This is how it works:
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Melanin is a pigment produced by cells in our skin called melanocytes.
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When our skin is exposed to the sun, the melanocytes produce more melanin in response to the increased UV radiation.
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The melanin absorbs the harmful UV radiation and transforms the energy into harmless heat. This process is known as "ultrafast internal conversion". This prevents the UVB radiation from damaging the DNA in the skin cells, which can lead to skin cancer.
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Therefore, the more melanin you have, the more protection you have against the sun. This is why people with darker skin, who have more melanin, are less likely to get skin cancer than people with lighter skin.
So, the correct answer to the multiple choice question is "absorbs UV radiation from sunlight".
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