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: 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


[Q]: Question: The reaction between a ketone and a Grignard reagent causes, after hydrolysing the salt formed, a: 
 Options:  <0> Carboxylic ester. <1> Alcohol. <2> Ether. <3> Aldehyde. <4> Carboxylic acid.
[A]: chemistry


[Q]: Question: In the human genome, the coding sequences are called: 
 Options:  <0> Exons <1> Promoters <2> Intensifiers <3> Introns <4> Adapters
[A]:
biology