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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The only fat-soluble vitamin that has coenzyme function
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The correct answer is  Vitamin k acts as a Coenzyme in the formation of g-carboxyglutamate in enzymes of blood clotting and bone matrix.All water-soluble vitamins act as coenzymes.Harper 30th edition pg: 550