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: Physiology
[{'content': 'Which of the following is NOT a propey of the Signal Recognition Paicle (SRP)? \nSelect and explain. \nA. Contains RNA and several polypeptides, B. Contains a single peptidase activity, C. Temporarily arrests translation, D. Binds to the signal sequence of secretory proteins', 'role': 'user'}, {'content': 'Answer: B \nExplanation: This is not a correct statement about SRP and hence is the correct answer to this question. SRP does not have peptidase activity. The signal sequence is removed from secretory proteins by a signal peptidase located within the RER.', 'role': 'assistant'}]