In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.
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Question: Question: Enterobacteriaceae are bacteria: 
 Options:  <0> Able to breathe and ferment. <1> Cytochrome C oxidase positive. <2> Mobiles with polar flagellation. <3> Lacking lipopolysaccharide. <4> Always associated with the intestine of mammals.

Answer: biology


Question: Question: Epidemiology allows early detection of changes in the incidence of a certain disease in the population. For this, the most correct thing is to use: 
 Options:  <0> The etiological investigation. <1> The description of the natural history of the disease. <2> Epidemiological surveillance. <3> The evaluation of the functioning of the services. <4> None of the previous answers is correct.

Answer: nursery


Question: Question: Very commonly the autoinducer molecules responsible for the quorum perception of many Gram-negative bacteria are: 
 Options:  <0> N-acyl homoserine lactones. <1> Diaminopimelic acid. <2> Proteins <3> Hills <4> Fatty acids.

Answer:
biology