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'.

[Q]: Question: Which of the following pairings between anticoagulant drug and mechanism of action is INCORRECT? 
 Options:  <1> Heparin - cofactor of antithrombin III. <2> Acenocoumarol - inhibits vitamin K epoxide reductase. <3> Dabigatran - inhibits thrombin. <4> Rivaroxaban - inhibits factor Xa. <5> Warfarin - inhibits the absorption of vitamin K.
[A]: 5


[Q]: Question: Azidothymidine (AZT) used against the human immunodeficiency virus: 
 Options:  <1> It binds to the cellular RNA polymerase and blocks transcription. <2> It binds to the early promoter of the virus and prevents its recognition by RNA polymerase. <3> Antagonizes the phosphorylation of nucleosides, thus inhibiting the synthesis of viral DNA. <4> Blocks the transport of thymidine to the cellular interior. <5> Inhibits transcriptase
[A]: 5


[Q]: Question: The repeating element of the DNA structure is called: 
 Options:  <1> Spiceosome <2> Nucleosome <3> Chromosome. <4> Replisome <5> Primosoma.
[A]:
2


