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: A study is carried out to investigate the association between factor X and disease Z. To do this, 120 subjects with the disease and 420 controls (without the disease) are matched by age and sex. In both groups it is found that 20 subjects were exposed to factor X. What is the odds ratio (OR) between factor X and disease Z? 
 Options:  <0> OR = 1 (no association). <1> OR = 2. <2> OR = 4 <3> OR = 6 <4> OR = 8
medicine

Question: Question linked to the image nº13 A 12-year-old boy who goes to primary care Pediatrics for fever, vomiting, abdominal pain and diarrhea. On cardiopulmonary auscultation, he presents with an ejection systolic murmur II / VI in a pulmonary focus with a fixed second unfolded noise, the remainder being the normal physical examination. For the evaluation of the murmur the pediatrician performs an ECG that is shown below. In relation to the interpretation of it, please indicate below the correct answer: 
 Options:  <0> It is a normal ECG. <1> He presents a first-degree atrioventricular block as the only alteration. <2> It presents a left extreme QRS axis. <3> It presents a QRS axis deviated to the right with an rsR' pattern. <4> There are clear signs of left ventricular hypertrophy.
medicine

Question: In the replication of the eukaryotic genes it participates: 
 Options:  <0> The Dna A and Dna B proteins <1> The complex of six proteins called ORC. <2> The eight protein complex called Dam methylase. <3> The MutL-MutS complex. <4> The MutH complex.

pharmacology