This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: miscellaneous, Subject name: Biochemistry
[{'content': 'Platelets contain \nSelect and explain. \nA. Both mitochondria and nucleus, B. Both mitochondria and lysozymes, C. Both nucleus and lysozymes, D. Only mitochondria', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Platelets Contain Mitochondria But Lack a NucleusIn response to thrombopoietin, the megakaryocytes that constitute the progenitors of red blood cells can fragment to form platelets.Like red blood cells, platelets lack a nucleus, but unlike erythrocytes, they possess mitochondria, lysozymes, and a tubular network that forms an open canalicular system.Ref: Harper&;s Biochemistry; 30th edition; Chapter 53; Red Blood Cells', 'role': 'assistant'}]