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 following enzyme is required for the hexose monophosphate shunt pathway: \nSelect and explain. \nA. Glucose-6-phosphatase, B. Phosphorylase, C. Aldolase, D. Glucose-6-phosphate dehydrogenase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Glucose-6-phosphate is oxidized by NADP+ dependent Glucose-6-phosphate dehydrogenase (GPD). 6-phospho glucono lactone is formed.\nOne molecule of NADPH is formed in the reaction. This is the rate-limiting step. Regulation is effected by this enzyme\n\xa0\nReference: Vasudevan 7th\xa0 ed, pg 130', 'role': 'assistant'}]