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.

Question: Iron deficiency anemia is treated with oral or parenteral preparations: 
 Options:  <0> Only ferrous salts should be used orally. <1> Only ferric salts should be used orally. <2> Orally, the most appropriate form is the iron-dextran complex. <3> Orally, the treatment should last a maximum of fifteen days. <4> Only ferrous salts should be used parenterally.
pharmacology

Question: On the link between the nitrogenous base and the ribose of the nucleotides: 
 Options:  <0> The anomeric carbon of ribose is in alpha configuration. <1> It is an N-glycosidic bond. <2> It involves the C5' of the ribose. <3> It involves phosphate groups. <4> It is of a different nature for each nitrogenous base.
biology

Question: For which of the following steps of protein synthesis GTP (Guanosine triosphate) is needed: 
 Options:  <0> Activation of amino acids by aminioacyl-tRNA synthetases. <1> Union of ribosomes to the endoplasmic reticulum. <2> Translocation of nascent tRNA-protein complex from place A to place P. <3> Union of mRNA. <4> Union of signal recognition protein to ribosomes.

chemistry