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 of the following enzymes do not participate in a ping-pong reaction? \nSelect and explain. \nA. Aminotransferases, B. Serine proteases, C. Pyruvate carboxylase, D. None of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The term “ping-pong” applies to mechanisms in which one or more products are released from the enzyme before all the\xa0substrates have been added. Ping-pong reactions involve covalent catalysis and a transient, modified form of the enzyme.\nExample- aminotransferases, serine proteases and pyruvate carboxylase.\nReference- Harper 30th edition Pg- 84', 'role': 'assistant'}]