This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Enzymes, Subject name: Biochemistry
[{'content': 'Kinase require \nSelect and explain. \nA. Mn++, B. Cu++, C. Mg++, D. Inorganic phosphate', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mg++ is the activator of many enzymes requiring ATP. Alkaline phosphatase, hexokinase, fructokinase, phosphofructokinase, adenyl cyclase, cAMP-dependent kinases, etc. need magnesium.Ref: DM Vasudevan, Page no: 420', 'role': 'assistant'}]