Multiple choice

Which vitamin is synthesized by bacteria in human body ?

  1. Riboflavin

  2. Pyridoxine

  3. Cyanocobalamin

  4. Biotin

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

Cyanocobalamin (Vitamin B12) is synthesized by symbiotic bacteria residing in the human large intestine, although humans primarily rely on dietary sources for absorption in the small intestine.