In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

[EX Q]: Question: Transpeptidation is the step in the biosynthesis of peptidoglycan in which: 
 Options:  <0> The union of N-acetylmuramic acid with N-acetyl glucosamine occurs inside the bacterial cell. <1> The exit of the precursors from the cytoplasm to the outside takes place. <2> The binding of the precursor to the peptidoglycan occurs outside, by glycosidic bonds. <3> The binding, by means of interpeptide bridges, between peptidoglycan chains. <4> The autolisinas act forming pores in its structure.
[EX A]: pharmacology

[EX Q]: Question: For the analysis of traces of inorganic constituents, in samples of organic nature, a preliminary treatment of the sample is needed, which normally consists of: 
 Options:  <0> Dissolve the sample in cold water. <1> Dissolve the sample in hot water. <2> Dissolve the sample between 30 and 70 ºC. <3> Heat the sample between 400 and 700 ºC. <4> Heat the sample in 0.1 M hydrochloric acid.
[EX A]: chemistry

[EX Q]: Question: Inhibitors of hydroxymethyl-glutaryl-CoA reductase (HMG-CoA reductase), such as statins: 
 Options:  <0> They increase intracellular cholesterol synthesis. <1> They cause a decrease in the number of LDL receptors present on the surface of hepatocytes. <2> They decrease the intracellular synthesis of triacylglycerides. <3> They diminish intracellular cholesterol synthesis and induce the expression of LDL receptors. <4> They increase the synthesis of steroid hormones.
[EX A]:
pharmacology

