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': "Which is the marker enzyme for Endoplasmic reticulum? \nSelect and explain. \nA. ATP synthase, B. 5' nucleotidase, C. Catalase, D. Glucose-6-phosphatase", 'role': 'user'}, {'content': "Answer: D \nExplanation: ATP synthase is marker enzyme for mitochondria.\n5' nucleotidase is marker enzyme for plasma membrane.\nCatalase and urate oxidase is marker enzyme for peroxidase.\nGlucose-6-phosphatase is marker enzyme for Endoplasmic reticulum.", 'role': 'assistant'}]