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.

[Q]: Question: For which of the following steps of protein synthesis GTP (Guanosine triosphate) is needed: 
 Options:  <0> Activation of amino acids by aminioacyl-tRNA synthetases. <1> Union of ribosomes to the endoplasmic reticulum. <2> Translocation of nascent tRNA-protein complex from place A to place P. <3> Union of mRNA. <4> Union of signal recognition protein to ribosomes.
[A]: chemistry


[Q]: Question: In general, viruses that have a naked capsid: 
 Options:  <0> They are stable against drying. <1> They are commonly released from the host cell by budding. <2> They are very sensitive to detergents. <3> They are very sensitive to the conditions in the intestinal tract. <4> They can not be neutralized by host antibodies.
[A]: biology


[Q]: Question: Streptococcus pyogenes strains that produce erythrogenic toxin are responsible for: 
 Options:  <0> Erysipelas. <1> Rheumatic fever. <2> Impetigo. <3> Glomerulonephritis <4> Scarlet fever.
[A]:
pharmacology