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: A key reaction in the regulation of gene expression is acetylation / desatethylation in the histones of some of its residues: 
 Options:  <1> Serina <2> Threonine <3> Lysine <4> Tryptophan <5> To the girl.
3

Question: Diabetic ketoacidosis (DKA) causes disorders of the metabolism of carbohydrates, proteins and lipids. The main clinical manifestations of CAD are: 
 Options:  <1> Hypoglycaemia, dehydration with loss of electrolytes and acidosis. <2> Hyperglycemia, dehydration with loss of electrolytes and alkalosis. <3> Hypoglycaemia, increases in volemia and acidosis. <4> Hyperglycemia, dehydration with loss of electrolytes and acidosis. <5> Hyperglycemia, increases in blood volume and alkalosis.
4

Question: The control of vital signs is fundamental in the assessment of the neurological patient. Many neurological disorders can present alterations of the respiratory pattern or frequency, indicating damage to the respiratory center or the nervous system. One of these abnormal breathing patterns, present in meningitis or cases of supratentorial injury, is Cheyne-Stokes respiration, characterized by: 
 Options:  <1> Regular frequency and superficial character. <2> Absence of clearly observable breathing. <3> A series of breaths that increase in amplitude / intensity to a maximum point in which they begin to decrease, followed by an apnea pause. <4> Slow and regular breaths with a frequency less than 10 per minute. <5> It is an abnormal and sustained increase in both depth and respiratory rate.

3