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: In the translation of prokaryotes, the first tRNA: 
 Options:  <0> It is introduced in site A. <1> Join a methylated amino acid. <2> It is accompanied by the IF2 factor. <3> It is paired with a UGA start codon. <4> Always join serina.

Answer: biology


Question: Question: The phosphate groups of the nucleotides: 
 Options:  <0> They are stabilized by binding to divalent anions. <1> They form low-energy hydrolysis bonds. <2> They are called X, Y and Z as they move away from ribose. <3> They are attached to the C3' of the ribose. <4> They present negative charge.

Answer:
biology