This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Microbiology Pa 1 (History, Microscopy, Stains and Structure and Physiology of Bacteria), Subject name: Microbiology
[{'content': 'All of the following organisms are known to survive intracellularly except \nSelect and explain. \nA. Neisseria meningitides, B. Salmonella typhi., C. Streptococcus pyogenes, D. Legionella pneumophila', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 1. Streptococcus pyogenes grows extracellular and causes pyogenic infection. 2. Intracellular bacteria are - Listeria monocytogenes Legionella Yersinia Salmonella typhi Shigella Neisseria Mycobacterium Francisella tularensis Pneumococci. 3. Obligate intracellular (Rickettsia, Chlamydia).', 'role': 'assistant'}]