instruction:
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:
Question: In a potentiometry at zero intensity the electrode: 
 Options:  <0> Indicator always measures balance potentials. <1> Indicator measures the half-wave potential. <2> Indicator can measure a mixed potential. <3> Reference is always a calomel platinum electrode. <4> Indicator is always a platinum electrode.
answer:
chemistry


question:
Question: Aspirin is an inhibitor of the synthesis of: 
 Options:  <0> Sterols <1> Prostaglandins <2> Phosphoacylglycerides. <3> Arachidonic acid. <4> Glycerophospholipids.
answer:
pharmacology


question:
Question: It is well associated with its function: 
 Options:  <0> Ribosomal RNA - messenger preRNA processing. <1> Messenger RNA - amino acid binding. <2> MicroRNA - inhibition of the translation of messenger RNA. <3> Transfer RNA - structural component of the ribosome. <4> Small interference RNA - processing of ribosomal RNA.
answer:

biology