Question

what pigment is produced by melanocytes, and what is its primary function? melanin; protects the nucleus of keratinocytes from uv radiation damage collagen; provides structural support to the skin elastin; maintains skin elasticity keratin; protects the skin from uv radiation

Explanation:

Melanocytes produce melanin. Melanin's main role is to shield keratinocyte nuclei from UV - induced harm. Collagen gives structural support, elastin ensures skin elasticity, and keratin is for skin barrier (not UV protection of nuclei like melanin). So the correct pair is melanin and its function of protecting keratinocyte nuclei from UV radiation.

Answer:

Melanin; protects the nucleus of keratinocytes from UV radiation damage