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: The denaturation of proteins:
Options: <1> It is accompanied by the loss of their activity. <2> It supposes the rupture of peptide bonds. <3> It is always an irreversible process. <4> Alter its primary structure. <5> It is carried out by chaperone proteins.

A: 1
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Q: Question: A drug with a seemingly monocompartmental distribution pattern is administered in the form of i.v. perfusion. at a constant speed of 20 mg / h for 48 h. Once the perfusion is finished, three blood samples are taken, which, when analyzed, allow the calculation of the primary parameters of the model Kel = 0.0495 h-1, concentration at the end of the perfusion (C48h) = 5,553 g / mL, Vd = 66 L. At what time would the steady state be reached ?:
Options: <1> 14 h. <2> 28 h. <3> 42 h. <4> 56 h. <5> 70 h.

A: 5
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Q: Question: In the technique of atomic absorption spectrometry, the use of an electrothermal atomizer instead of the flame provides:
Options: <1> Greater accuracy <2> Greater precision. <3> Greater sample consumption <4> Longer analysis times. <5> Greater sensitivity

A:
5
****