Multiple choice

Vitamin D is synthesised in skin by the action of sunlight upon which of the following?

  1. Cephano cholesterol

  2. 7-Dehydrocholesterol

  3. Cholesterol

  4. All of the above

  5. -

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

7-Dehydrocholesterol is a type of cholesterol that functions in the serum as a cholesterol precursor and is converted to vitamin D₃ in the skin.