instruction:
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'.
question:
Question: The generation of the cold vapor is a form of introduction of the sample for the atomization that is used in atomic absorption spectrometry (EAA) to analyze: 
 Options:  <1> Lead and Arsenic. <2> Mercury. <3> Elements that have a low vapor pressure at room temperature. <4> Halogens of high molecular weight. <5> Alcalinotérreos.
answer:
2


question:
Question: The transmembrane proteins that bind to intracellular and extracellular proteins are: 
 Options:  <1> Ocludines. <2> Cadherins. <3> Actins. <4> Integrins <5> Desmocolinas.
answer:
4


question:
Question: In some sample treatments, the solid phase extraction technique is used. Said technique: 
 Options:  <1> It has the advantage that solvents are not required. <2> It is applied by contacting the solid sample with the stationary phase contained in a cartridge. <3> It does not require the application of pressure or vacuum. <4> It allows carrying out the preconcentration of large volume samples. <5> It is characterized by the high consumption of solvents.
answer:

4