Solved UPSC CDS/OTA Question
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Q · Digestive Systemmedium · 45s
Which vitamin is synthesized by gut bacteria in the large intestine?
TopicDigestive System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Gut microbiota synthesize vitamin K and some B vitamins (e.g., biotin, folate). Vitamin K is essential for blood clotting factor activation and bone metabolism; the large intestine provides a site for microbial biosynthesis and absorption of these vitamins.
Final Answer: Option C - Vitamin K