This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'The MOST common enzyme deficiency responsible for Galactosemia is related to which of the following enzymes? \nSelect and explain. \nA. UDP galactose epimerase, B. Galactokinase, C. Galactosidase, D. Galactose-l-phosphate uridyl transferase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Galactose-1-phosphate uridyltransferase (GALT) deficiency is the most common enzyme deficiency that causes hypergalactosemia. Hereditary galactosemia is among the most common carbohydrate metabolism disorders and can be a life-threatening illness during the newborn period. Ref: Liver Disease in Children By Frederick J. Suchy, Ronald J. Sokol, William F. Balistreri, 2007, Page 596; Textbook of Biochemistry and Human Biology by L. M. Srivastava, Page 353; Saunders manual of pediatric practice by Laurence Finberg, Ronald E. Kleinman, Page 238', 'role': 'assistant'}]