Multiple choice

Which vitamin is required for collagen synthesis? 

  1. Vitamin A

  2. Vitamin C

  3. Vitamin K

  4. Vitamin D

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

Vitamin C (ascorbic acid) acts as a cofactor for the enzymes prolyl hydroxylase and lysyl hydroxylase, which are essential for stabilizing the collagen triple helix structure. Without it, collagen synthesis is impaired, leading to scurvy.