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: The use of monolithic columns and continuous beds in liquid chromatography is already very common. To this end: 
 Options:  <1> Microporous membranes are used so that the interaction between a solute and the matrix takes place in the final part of the pore. <2> A separation medium is introduced with a greater degree of continuity than the stationary particle phase so that the mobile phase is forced to traverse the large pores of the medium, improving mass transport. <3> Monodisperse particles are used as a stationary phase in order to improve mass transfer. <4> Flexible organic gels are used from microporous polymers in order to decrease the flow rates. <5> Columns filled with small particles of polymerized silica are used.
2

Question: Of the antiemetic drugs reviewed, in which of them their pharmacological activity is NOT related to dopaminergic receptors ?: 
 Options:  <1> Granisetron. <2> Cleboprida. <3> Droperidol <4> Tietilperazine. <5> Domperidone
1

Question: In contrast to the bacterial ones, the eukaryotic chromosomes need multiple origins of replication because: 
 Options:  <1> They can not be replicated bidirectionally. <2> They are not usually circular. <3> The processivity of eukaryotic DNA polymerase is much lower than that of bacterial DNA polymerase. <4> Its replication rate is much slower, and they would need too much time using a single source. <5> They have several DNA polymerases for different purposes, and they need the corresponding variety of origins.

4

