Multiple choice

Vitamin D is obtained from exposure to Sun. Among the following ----------------- is a form of vitamin D.

  1. phylloquinone

  2. cholecalciferol

  3. ascorbic acid

  4. cyanocobalamin

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cholecalciferol is a form of vitamin D, also called vitamin D3 or calciol. It is structurally similar to steroids such as testosterone, cholesterol, and cortisol (though vitamin D3 itself is a secosteroid).