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: The arginosuccinasa: 
 Options:  <0> In an enzyme of the citric acid cycle. <1> Converts arginine to lysine. <2> It is activated by the allosteric effector N-acetylglutamate. <3> It produces fumarate. <4> It is a glycogenic amino acid.
answer:
chemistry


question:
Question: Patient with polyuria and polydipsia with a specific urine density greater than 1.040. From the following options indicate the most probable diagnosis: 
 Options:  <0> Alcohol intoxication <1> Suppression of ADH (vasopressin) by barbiturates. <2> Mellitus diabetes. <3> Lithium toxicity that causes diabetes insipidus. <4> Central deficit of ADH (vasopressin).
answer:
pharmacology


question:
Question: Unlike receptors of adaptive immunity, those of innate immunity are characterized by: 
 Options:  <0> Have a clonal distribution. <1> Its greatest diversity <2> Be identical in cells of the same lineage. <3> Recognize and react against own molecules. <4> Being only on the cell surface.
answer:

biology