Solved UPSC CDS/OTA Question
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Q · Nutrition and Nutrients medium · 45s
Which B vitamin is necessary for red blood cell formation and neurological function?
TopicNutrition and Nutrients
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Vitamin B₁₂ (cobalamin) is required for DNA synthesis in red blood cells and myelin formation in nerves. Deficiency leads to megaloblastic anemia and neuropathy with paresthesia. Found only in animal products, risk groups include vegans and elderly with absorption issues; supplementation or fortified foods are recommended.
Final Answer: Option D - B₁₂