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: As an immunoanalytical technique, flow cytometry is mainly based on the detection of signals:
Options: <1> Chemiluminescent <2> Fluorescent <3> Bioluminescent <4> Piezoelectric. <5> Magnetic
[A]: 2

[Q]: Question: In the synthesis of DNA, the quinolones act:
Options: <1> Joining the double helix and thus blocking the progress of the replication fork. <2> Interlacing in the double helix and thus causing errors in the transcription. <3> On DNA gyrase. <4> As nucleotide analogs that are incorporated into DNA. <5> About DNA polymerases.
[A]: 3

[Q]: Question: The determination of the concentration of one of the following proteins in serum can give us information of a possible hemolytic anemia. Indicate which:
Options: <1> Transferrin <2> Hemosiderin. <3> Ceruloplasmin. <4> Ferritin. <5> Haptoglobin.
[A]:
5