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: Indicate which of the following is a mitochondrial disease: 
 Options:  <0> α-thalassemia <1> Essential fructosuria. <2> Leigh syndrome. <3> Cushing's syndrome. <4> Sickle cell anemia
[A]: pharmacology


[Q]: Question: Could a glass electrode be used as a reference electrode ?: 
 Options:  <0> Yes, if the glass electrode is a combined electrode. <1> Yes, if a mercury electrode is used as the indicator electrode. <2> No, since the glass electrode is a selective electrode. <3> No, because its foundation is not Nerstian. <4> Yes, if the determination is made in a buffered medium.
[A]: chemistry


[Q]: Question: Insulin regulates the synthesis of fatty acids: 
 Options:  <0> Activating phosphorylase <1> Dephosphorylating acetyl CoA carboxylase. <2> Inhibiting the formation of malonyl CoA. <3> Controlling the carnitine-acyl CoA transferase activity. <4> Activating the fatty acid synthetase.
[A]:
chemistry