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: To silence messenger RNA (mRNA) siRNAs and miRNAs are usually linked to your: 
 Options:  <0> TATA box. <1> 5'-UTR. <2> 5 'cap. <3> 3'-UTR. <4> Poly (A) 3 tail.

Answer: biology


Question: Question: Ribosomes have three binding sites for the transfer RNAs (RNAs), which are: 
 Options:  <0> Site A of acetyl, P of propyl and E of ethyl. <1> A site of aminoacyl, P of peptidyl and E of exit (from English, exit). <2> A site of aminoacyl, peptidyl P and transferase T of the peptide. <3> Site A of previous, P of posterior and E of entry (of English, entry). <4> A site of aminoacyl, peptidyl P and terminating T.

Answer: pharmacology


Question: Question: Phosphofructokinase-1: 
 Options:  <0> Participates in glycolysis and gluconeogenesis. <1> It catalyzes an easily reversible reaction. <2> It is an enzyme with allosteric regulation. <3> Directly transfers a Pi to fructose6P. <4> Produce ATP.

Answer:
biology