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.
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Question: 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.

Answer: chemistry


Question: Question: P. L. complains of gastroesophageal reflux and although he takes the prescribed drugs he acknowledges that he did not carry out the diet because he thought it was not important. Now he asks for dietary recommendations. Which one is indicated ?: 
 Options:  <0> Take very cold foods. <1> Take very hot foods. <2> Drink liquids at lunch and dinner. <3> Take low fat diet. <4> Drink citrus juices.

Answer: nursery


Question: Question: In the study of proteins. What is the purpose of treatment with β-mercaptoethanol ?: 
 Options:  <0> Hydrolyze the protein. <1> Break the disulfide bridges. <2> Add positive charges. <3> Add negative charges. <4> General an amino acid derivative in Edman degradation.

Answer:
chemistry