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: The completion of the translation: 
 Options:  <0> It takes place in AUG codons. <1> It is produced by incorporation of an empty tRNA. <2> It occurs when the ribosome reaches the end of the mRNA. <3> It does not consume energy. <4> It is mediated by proteins with structure similar to tRNA.

Answer: biology


Question: Question: A motor neuron and all the muscle fibers that it innervates constitute: 
 Options:  <0> Motor plate. <1> Motor unit <2> Neuromuscular junction <3> Motor synapse <4> Motor filament

Answer: biology


Question: Question: When two or more major depressive episodes occur, separated by a period of at least two months, during which the individual does not become depressed, what is diagnosed? 
 Options:  <0> Major depressive disorder. <1> Dysthymic disorder. <2> Cyclothymic disorder <3> Major recurrent depressive disorder. <4> Depressive episode

Answer:
psychology