Solved UPSC CDS/OTA Question
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Q · Nutrition and Nutrients medium · 45s
Which nutrient deficiency impairs prothrombin formation and causes hemorrhages?
TopicNutrition and Nutrients
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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Vitamin K is required for γ-carboxylation of glutamic acid residues in clotting factors and prothrombin. Deficiency or warfarin therapy prolongs bleeding time and increases hemorrhage risk.
Final Answer: Option C - Vitamin K