Which of the following substances is synthesized in the skin from a cholesterol-based precursor upon safe exposure to ultraviolet (UV) rays of sunlight?

Question

Quizplus · Accepted Answer

Vitamin D is synthesized in the skin from a cholesterol-based precursor upon safe exposure to ultraviolet (UV) rays of sunlight.
Keratin is synthesized by cells in the epidermis called keratinocytes.
The pigment melanin, which is responsible for the color of skin, is synthesized by cells in the epidermis called melanocytes.
Sweat is produced by the eccrine glands in order to facilitate evaporative cooling.

Which of the Following Substances Is Synthesized in the Skin