instruction:
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:
Question: In oxidative stress it is characteristic: 
 Options:  <0> Decrease in the concentration of oxidized glutathione. <1> Increase in the concentration of reduced glutathione. <2> Decreased production of reactive oxygen species. <3> Increase in the production of reactive oxygen species. <4> None of the previous are true.
answer:
chemistry


question:
Question: Indicate which of the following is an alteration of the pyrimidine metabolism: 
 Options:  <0> Thrombophilia <1> Phenylketonuria <2> Wilson's disease <3> Urine disease with the smell of maple syrup. <4> Orotic hereditary acidity.
answer:
pharmacology


question:
Question: Gluconeogenesis is active in: 
 Options:  <0> Brain and nervous tissue. <1> Liver and renal cortex. <2> Erythrocytes <3> Testicles and renal medulla. <4> Skeletal muscle
answer:

biology