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': 'Lactose on hydrolysis yields \nSelect and explain. \nA. 2 molecules of fructose, B. 2 molecules of glucose, C. One molecule of glucose and one molecule of fructose, D. One molecule of glucose and one molecule of galactose', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Lactose i. It is the sugar present in milk. It is a reducing disaccharide. On hydrolysis, lactose yields glucose and galactose. Beta glycosidic linkage is present in lactose. ii. The anomeric carbon atom of beta-galactose is attached to the 4th hydroxyl group of glucose through beta-1,4 glycosidic linkage. The lactose may be alpha or beta variety, depending on the configuration of 1st carbon of glucose moiety.Ref: DM Vasudevan, 7th edition, page no: 77', 'role': 'assistant'}]