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: 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

Answer: 5

Question: Question: Retrograde amnesia is defined as:
Options: <1> Memory loss that covers the period before the onset of the disorder that gave rise to amnesia. <2> Memory loss that covers the period following the onset of the disorder that gave rise to the amnesia. <3> Partial loss of memory that covers a specific period. <4> Memory loss in the absence of an organic brain disorder. <5> Distortions or memory errors.

Answer: 1

Question: Question: The deficit of which of the following enzymes is NOT a cause of porphyria ?:
Options: <1> Protoporphyrinogen oxidase. <2> Delta-amino levulinic synthetase. <3> Coproporphyrinogen III oxidase <4> Uroporphyrinogen decarboxylase. <5> Uroporphyrinogen III cosintetase.

Answer:
2