Multiple choice

Which vitamin requires castle's intrinsic factor for intestinal absorption?

  1. Vitamin B5

  2. Vitamin B3

  3. Vitamin B12

  4. Vitamin B9

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

Intestinal absorption of cobalamin (B12) requires the action of enzyme castle's intrinsic factor. Failure of secretion of this enzyme produces vitamin B12 deficiency.