This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology Pa 2 ( Hybridoma Technology, Complement Pathways, Interferon, Structure and Functions of Immune Cells ), Subject name: Microbiology
[{'content': 'F plasmid of high frequency recombination is a \nSelect and explain. \nA. Extrachromosomal, B. Chromosomal, C. Mesosome, D. Ribosomes', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Characters of Plasmids: 1.Plasmids are circular DNA molecules. 2.Can replicate independently. 3.Plasmids or episomes are not essential for bacteria. 4.They may carry propeies of a)Drug resistance b)Toxigenicity Eg:E.coli,Klebsiella Salmonella Shigella ,Proteus Types of plasmids : 1.R plasmids. 2.Col factors (Colicinogenic factors) 3.F or Feility factors.', 'role': 'assistant'}]