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': 'In glycolysis, insulin affects all of the following enzymes except: \nSelect and explain. \nA. Phosphofructokinase, B. Pyruvate kinase, C. Glucokinase, D. Hexokinase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The activation as well as the quantities of ceain key enzymes of glycolysis, namely glucokinase (NOT hexokinase), phosphofructokinase and pyruvate kinase are increased by insulin.', 'role': 'assistant'}]