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: Indicate the net charge of an amino acid with a neutral R group for a pH value below its pI: 
 Options:  <0> Negative net charge. <1> Positive net charge. <2> Without charge. <3> It is necessary to know the exact pH value to answer this question. <4> It is necessary to know the concentration of the amino acid to answer this question.
[EX A]: chemistry

[EX Q]: Question: Question linked to the image nº4 34-year-old man, athlete, who presents a picture of oppressive, continuous chest pain radiating to the back that is accentuated with deep inspiration, of 4 days of evolution, without fever. It refers to a picture of tonsillitis 2 months ago. Rhythmic cardiac auscultation without murmurs. It does not present data of hemodynamic alteration or heart failure. Normal analytical, except for discrete leukocytosis. When you arrive at the emergency room, an ECG is performed, shown in the figure. While waiting for the result of markers of myocardial injury, the most likely diagnosis in this patient is: 
 Options:  <0> Subacute myocardial infarction anteroseptal. <1> Tietze syndrome. <2> Osteomuscular thoracic pain with athlete's ECG. <3> Acute pericarditis <4> Unstable angina.
[EX A]: medicine

[EX Q]: Question: The cell is destroyed to release the secretion: 
 Options:  <0> Merocrine <1> Apocrine <2> Endocrine <3> Holocrine <4> Paracrine
[EX A]:
biology