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From which of the following does the basic structure of hair and nails form?
a.
sweat
c.
collagen
b.
melanin
d.
keratin

Respuesta :

Answer: D. Keratin

Explanation: Keratinocytes (pronounced: ker-uh-TIH-no-sites) make keratin, a type of protein that's a basic component of hair, skin, and nails. Keratin in the skin's outer layer helps create a protective barrier.

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