This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Carbohydrates, Subject name: Biochemistry
[{'content': 'Essential fructosuria is due to the deficiency of which enzyme? \nSelect and explain. \nA. Aldolase A, B. Aldolase B, C. Fructokinase, D. Glucokinase', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) FructokinaseRef: Harper, pg. 169"Deficiencies in the enzymes of fructose and galactose metabolism lead to essential fructosuria and galactosemias""Lack of hepatic fructokinase causes essential fructosuria, and absence of hepatic aldolase B, which cleaves fructose 1-phosphate,leads to hereditary fructose intolerance"Metabolism of fructose. Aldolase A is found in all tissues, whereas aldolase B is the predominant form in liver. (not found in liver)', 'role': 'assistant'}]