Multiple choice

Which of the following lipids is a biological precursor to vitamin D2?

  1. Cholesterol

  2. Phytosterols

  3. Ergosterol

  4. Hopanoids

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

Ergosterol is a biological precursor (a provitamin) to vitamin D2. It is turned into viosterol by ultraviolet light, and is then converted into ergocalciferol, which is a form of vitamin D.