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: In an electrochemical cell, the supporting electrolyte serves to: 
 Options:  <0> That the principle of electroneutrality in the dissolution is fulfilled. <1> That their ions are electrolized preferably in order to prevent the consumption of electroactive substance. <2> That in the cell there is transport by migration, in order to achieve greater sensitivity. <3> That the solution has an adequate electrical conductivity. <4> Encourage transport by diffusion of the electroactive substance.

Answer: chemistry


Question: Question: Kinesin and dynein are: 
 Options:  <0> Adhesion proteins. <1> Microtubular motors. <2> Degradative enzymes <3> Components of the vesicular cover. <4> Transcriptional factors.

Answer: biology


Question: Question: The genome of the hepatitis B virus is DNA from: 
 Options:  <0> Simple string (+). <1> Simple string (-). <2> Double circular chain. <3> Double linear chain. <4> Incomplete circular double chain (with notches).

Answer:
biology