This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of carbohydrate, Subject name: Biochemistry
[{'content': "Pentosuria is due to defect in which pathway? \nSelect and explain. \nA. Glycolysis, B. Polyol pathway, C. Uronic acid pathway, D. Kreb's cycel", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Essential Pentosuria i. It is one of the members of the Garrod&;s tetrad. The incidence is 1 in 2,500 bihs. ii.It is an inborn error of metabolism, due to defect in glucuronic acid pathway of glucose. In the pathway, L-xylulose is conveed to D-xylulose by two enzymes, xylitol dehydrogenase and xylulose reductase absence of any of this enzyme lead to pentosuria.Ref: DM Vasudevan, 7th edition, page no: 134', 'role': 'assistant'}]