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: What type of amino acid side chains will compete with saline ions for solvation water ?: 
 Options:  <0> Apolares. <1> Aliphatic <2> Aromatic <3> Polar <4> Without charge.
chemistry

Question: One of the enzymes mentioned below does not intervene in glycogen metabolism: 
 Options:  <0> Glycogen synthase. <1> Glycogen phosphorylase. <2> Glucose-6-phosphate dehydrogenase. <3> Phosphoglucomutase <4> UDP-glucose pyrophosphorylase.
chemistry

Question: Ketogenic amino acids: 
 Options:  <0> They may contribute to the synthesis of glucose. <1> They are intermediaries of the urea cycle. <2> They are the substrate of reactions catalyzed by transketolase. <3> They can produce acetyl-coenzyme A. <4> They are eliminated in the form of ketoses.

biology