Solved UPSC CDS/OTA Question
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Q · Nutrition and Nutrients medium · 45s
Which nutrient is essential for methionine metabolism and DNA methylation?
TopicNutrition and Nutrients
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Choline contributes methyl groups via betaine in homocysteine remethylation to methionine, supporting DNA methylation and lipid transport as part of phosphatidylcholine. Deficiency can impair liver function and muscle performance.
Final Answer: Option A - Choline