TASK DEFINITION: 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.
PROBLEM: Question: In the processing and presentation of peptides of extracellular origin intervene (n): 
 Options:  <0> The TAP proteins. <1> The tapasina. <2> The HLA-DM molecule. <3> The proteosome. <4> The HLA-B molecules.

SOLUTION: biology

PROBLEM: Question: A 60-year-old patient who came to the hospital's emergency department due to a left chest pain, cough and yellowish sputum, a temperature of 38.7ºC, a sensation of shortness of breath. Artificial saturation of 02 80%. Hemogram leukocytes 12000 / uL with 86% polymorphonuclear cells. Chest x-ray: alveolar infiltrate on the left base with air bronchogram. On suspicion of pneumonia, pneumococcal Ag is made in urine, which is positive and sputum culture is sent to the Microbiology service. Which empirical antibiotic treatment of the indicated ones is more correct in expectation of microbiological results? 
 Options:  <0> Ceftazidime <1> Clarithromycin <2> Azithromycin <3> Ceftriaxone <4> Doxycycline

SOLUTION: medicine

PROBLEM: Question: The first stage of the mechanism of dehydration of cyclohexanol with H2SO4 is: 
 Options:  <0> Loss of OH-. <1> Formation of an ester sulfate. <2> Protonation of alcohol. <3> Loss of H + by alcohol. <4> Elimination of H2O from alcohol.

SOLUTION:
chemistry