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: A 70-year-old woman, worried about her risk of having a stroke, comes to our office because her mother died of this cause a year ago. He has a history of high blood pressure and type 2 diabetes mellitus, so he is being treated with glipizide, aspirin, enalapril and atorvastatin. He smokes 20 cigarettes a day and does not exercise regularly. On examination, a blood pressure of 150/80 mmHg is detected. The analytical highlights a hemoglobin A1c of 8% and an LDL cholesterol of 110 mg / dl. Which of the following is associated with a greater reduction in stroke risk? 
 Options:  <0> Achieve optimal levels of hemoglobin A1C. <1> Achieve an optimal control of blood pressure. <2> Add an antioxidant to the treatment. <3> Abandon tobacco <4> Achieve optimal levels of LDL.

A: medicine
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Q: Question: To observe the bacterial capsules in a clear field microscope, a stain is made: 
 Options:  <0> Resistant acid <1> From Leifson. <2> Simple. <3> Negative. <4> Differential.

A:
biology
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