What production occurs when sunlight converts a skin precursor to a nutrient essential for health?

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Multiple Choice

What production occurs when sunlight converts a skin precursor to a nutrient essential for health?

Sunlight triggers production of a nutrient through a skin precursor. UVB rays convert 7-dehydrocholesterol in the skin into vitamin D3, which is then activated in the liver and kidneys. Vitamin D is essential for calcium absorption and bone health, among other roles, making this the best match to the description. Melanin is a pigment produced to help protect skin from UV damage, not a nutrient. Collagen synthesis relies on nutrients like vitamin C and isn’t directly produced by sunlight converting a skin precursor. Keratin production refers to making structural proteins in the skin, not a nutrient produced by sunlight.

Sunlight triggers production of a nutrient through a skin precursor. UVB rays convert 7-dehydrocholesterol in the skin into vitamin D3, which is then activated in the liver and kidneys. Vitamin D is essential for calcium absorption and bone health, among other roles, making this the best match to the description.

Melanin is a pigment produced to help protect skin from UV damage, not a nutrient. Collagen synthesis relies on nutrients like vitamin C and isn’t directly produced by sunlight converting a skin precursor. Keratin production refers to making structural proteins in the skin, not a nutrient produced by sunlight.

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