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.

[EX Q]: Question: On the molecular biology of cancer:
Options: <0> Oncogenes are mutated derivatives of normal genes, called protooncogenes, whose function is to promote cell proliferation or survival. <1> Oncogenes are genes that synthesize proteins that inhibit cell proliferation. <2> The tumor suppressor genes synthesize proteins that inhibit cell death. <3> Protooncogenes synthesize proteins that promote cell death. <4> Apoptosis is a form of activation of proto-oncogenes.
[EX A]: chemistry

[EX Q]: Question: In an electrochemical cell, the supporting electrolyte serves to:
Options: <0> That the principle of electroneutrality in the dissolution is fulfilled. <1> That their ions are electrolized preferably in order to prevent the consumption of electroactive substance. <2> That in the cell there is transport by migration, in order to achieve greater sensitivity. <3> That the solution has an adequate electrical conductivity. <4> Encourage transport by diffusion of the electroactive substance.
[EX A]: chemistry

[EX Q]: Question: What is the relationship between turbidimetry and nephelometry?
Options: <0> Nephelometry is the inverse of turbidimetry. <1> Turbidimetry is more sensitive than nephelometry. <2> Nephelometry can be measured with a conventional spectrophotometer. <3> Both technologies measure the dispersion of light. <4> Both technologies are the most sensitive and used in clinical laboratories.
[EX A]:
chemistry