Given the task definition and input, reply with output. 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.

Question: The tRNA-aminoacyl-transferases:
Options: <0> They link the amino acid to the ribosome. <1> They bind the amino acid to the anticodon of the tRNA. <2> They are RNA polymerases. <3> They guarantee the fidelity of the translation. <4> They are not important in the translation.
biology