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.

Q: Question: A basic component of spectrophotometers is the monochromator. Its function is: 
 Options:  <0> Connect the different wavelengths from the source to achieve greater light power. <1> Transform the optical signal measured by the detector into an electrical signal. <2> Disperse the light separating the wavelengths that compose it and select a narrow band. <3> Amplify the analytical signal by improving the signal-to-noise ratio. <4> Decrease the power of the light beam to eliminate the background noise of the spectrophotometer.

A: chemistry
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Q: Question: On the link between the nitrogenous base and the ribose of the nucleotides: 
 Options:  <0> The anomeric carbon of ribose is in alpha configuration. <1> It is an N-glycosidic bond. <2> It involves the C5' of the ribose. <3> It involves phosphate groups. <4> It is of a different nature for each nitrogenous base.

A: biology
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Q: Question: A 70-year-old woman with a history of hypertension and moderate heart failure attended the clinic due to a persistent and dry cough that started as a sensation of itching in the throat. In the analytical hyperkalemia is observed. What is the drug suspected of causing the clinical and analytical alteration of the patient? 
 Options:  <0> Hydrochlorothiazide. <1> Bisoprolol. <2> Furosemide. <3> Enalapril <4> Hydralazine

A:
medicine
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