In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
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Question: Question: Turbidimetry and nephelometry are non-spectroscopic techniques based on the dispersion of light, with interesting applications in biochemical analysis. The criteria to be taken into account when choosing between nephelometry and turbidimetry in the analysis of a sample containing particles in suspension are: 
 Options:  <1> The size of the suspended particles and the detector of the instrument. <2> The size of the suspended particles and the wavelength of the radiation used. <3> The wavelength of the radiation emitted and the shape of the suspended particles. <4> The size of the suspended particles and the color of them. <5> The color of the particles and their fluorescence.

Answer: 2


Question: Question: Indinavir is a selective inhibitor of HIV protease because: 
 Options:  <1> By hydrolysis, the active drug is generated. <2> Rents irreversibly the active center of the enzyme. <3> Its structure mimics the transition state of the reaction catalyzed by the enzyme. <4> It is a suicide inhibitor. <5> Its symmetric structure interacts effectively with the active center of the enzyme.

Answer: 3


Question: Question: By reaction of carbonyls with primary and secondary amine, the following are obtained: 
 Options:  <1> Iminas and oximes. <2> Iminas and enaminas. <3> Oxazones and hydrazones. <4> Semicarbazones and nitrones. <5> None of the above.

Answer:
2