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 papillary muscles:
Options: <0> They contract atrio-ventricular valves. <1> They prevent the reflux of blood to the atria. <2> They avoid the eversion of the semilunar valves. <3> They form the interventricular septum. <4> They are formed by visceral smooth muscle.
answer:
biology

question:
Question: A conjugated protein is:
Options: <0> A protein that contains chemical components different from the permanently associated amino acids. <1> A protein that contains amino acids with side chains with conjugated bonds. <2> A protein that contains chemical components that make it insoluble. <3> A protein incorrectly folded. <4> A denatured and inactivated protein.
answer:
chemistry

question:
Question: In what disorder of eating behavior, the personality of patients is characterized as impulsive people, with a tendency to make quick decisions and act unpredictably?
Options: <0> Anorexia nervosa of restrictive type. <1> Pica. <2> Obesity. <3> Bulimia nervosa. <4> Night dining
answer:
psychology