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: With respect to the distribution coefficient of a solute between two partially miscible liquids: 
 Options:  <0> Because it is a quotient between solute concentrations in the two phases, it is independent of temperature. <1> It does not depend on the total amount of solute in both parts. <2> It is useful to determine the molar mass of the solute. <3> If one phase is water and the other an organic solvent, it is usually used in medical and environmental chemistry to know the distribution of drugs and contaminants between these two types of media. <4> It only has physical significance when the liquid phases are in contact through a semipermeable membrane.

SOLUTION: chemistry

PROBLEM: Question: Vasconstricts systemic arterioles: 
 Options:  <0> Low pO2. <1> Low pH. <2> Angiotensin II. <3> Acetylcholine <4> Nitric oxide.

SOLUTION: biology

PROBLEM: Question: A 45-year-old woman with a history of a heart murmur detected in the pediatric age. Enter the Emergency Department for symptoms of palpitations, easy fatigue and malignant edema. Physical examination reveals absence of cyanosis. Oxygen Saturation by pulse oximeter 97%. TA: 120/80 mm Hg. Irregular heart rate at 100 bpm. Systolic ejection murmur (2/6) in pulmonary focus. 2nd R unfolded, wide and fixed. No death rattles. Slight hepatomegaly (2-3 cm). Slight malleolar edema. ECG: complete arrhythmia due to atrial fibrillation at 100 bpm. AQRS: + 120º. Conduction disorder of the right branch of the bundle of His. What is your diagnostic orientation? 
 Options:  <0> Ventricular communication. <1> Aortic stenosis. <2> Mitral stenosis. <3> Interauricular communication. <4> Persistent ductus arteriosus.

SOLUTION:
medicine