Q. Which one of the following combination of vitamins are synthesised by bacteria?
A) Vitamin-$B_{12}$ and K
B) Vitamin-$B_{1}$ and B
C) Vitamin-B and $B_{12}$
D) Vitamin-K and D
Explanation
Colon part of the large intestine contains some bacteria. Some of them are symbiotic in nature. These bacteria feeds on undigested matter. This bacteria (E. coli) in turn produce vitamin-$B_{12}$, vitamin-K along with vitamin-$B_{1}$ and $B_{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.