![Which of the following bacteria requires nicotinic acid as a growth factor in their media?](https://www.gkseries.com/blog/wp-content/uploads/2022/10/Which-of-the-following-bacteria-requires-nicotinic-acid-as-a-growth-factor-in-their-media.png)
Q. Which of the following bacteria requires nicotinic acid as a growth factor in their media?
- Nitrosomonas sp
- coli
- Proteus vulgaris
- none of the above
Answer: Proteus vulgaris
Q. Which of the following bacteria requires nicotinic acid as a growth factor in their media?
Answer: Proteus vulgaris
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