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.

[EX Q]: Question: An essential characteristic of plasmids is: 
 Options:  <0> Be able to integrate into the genome of the host cell. <1> Direct the process of bacterial conjugation. <2> Carry genes for antibiotic resistance. <3> Replicate autonomously. <4> Being circular DNA molecules.
[EX A]: biology

[EX Q]: Question: Becker muscular dystrophy is an alteration of: 
 Options:  <0> The skeletal muscle. <1> The metabolism of lipids. <2> The bones. <3> Hepatic origin. <4> The bilirubin.
[EX A]: pharmacology

[EX Q]: Question: Choose among the following phrases the one that most appropriately defines a concerted reaction: 
 Options:  <0> Reaction in a single stage in which all the links that are formed and break do so at the same time. <1> Reaction in several stages in which all the links that are formed and break do so at the same time in the slowest stage. <2> Reaction in which the speed of all stages is identical. <3> It is an equilibrium reaction in which K = 1. <4> Reaction in several stages in which all the links that are formed and break do so at the same time in the fastest stage.
[EX A]:
chemistry