TASK DEFINITION: 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.
PROBLEM: Question: The gas used to generate the ICP plasma (coupled induction plasma) is: 
 Options:  <0> Hydrogen for being diatomic, chemically inert and with a low ionization energy. <1> Oxygen because it is diatomic, highly reactive and with a high ionization energy. <2> Argon, being monatomic, chemically inert and with a high ionization energy. <3> Xenon, being monatomic, highly reactive and with a low ionization energy. <4> None of the above is correct, because the gas used is helium.

SOLUTION: chemistry

PROBLEM: Question: The translocation t (11; 14) is characteristic of mantle lymphoma. Which fusion protein originates, capable of promoting the cells towards the S phase of the cell cycle ?: 
 Options:  <0> BCL-2 <1> Beta-2-microglobulin. <2> Cyclin D1. <3> Transreticulin. <4> ALK protein.

SOLUTION: pharmacology

PROBLEM: Question: Enzymatic regulation by reversible covalent modification: 
 Options:  <0> It involves the breaking of the peptide bond. <1> It requires the action of another enzyme. <2> It always involves phosphorylation reaction. <3> It never affects allosteric enzymes. <4> The enzyme never comes in two forms.

SOLUTION:
biology