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: The chemical reactions of the splicing process of the introns during the maturation of the pre-mRNAs consists of:
Options: <0> An oxidation-reduction reaction. <1> A transesterification reaction. <2> Two sequential transesterification reactions. <3> Three sequential transesterification reactions. <4> A transesterification reaction followed by another oxidation reaction.

A: chemistry
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Q: Question: Among the following, the first precursor cell of neutrophil granulocytes is:
Options: <0> Monoblast. <1> Myeloblast. <2> Metamielocito. <3> Cell in band (or in staff) <4> Promyelocyte

A: biology
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Q: Question: The MIC-A protein, expressed in various cell types and induced by cellular stress situations, is recognized by:
Options: <0> KIR receivers. <1> The Major Histocompatibility Complex (MHC). <2> The NKG2D receptor. <3> B lymphocytes <4> NOD type receivers.

A:
pharmacology
****