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.

[Q]: Question: Which compound acts as a sulfhydryl buffer and as an antioxidant? 
 Options:  <0> Glycogen <1> Glutamic acid. <2> Glucagon. <3> Glutathione <4> Ascorbic acid.
[A]: chemistry


[Q]: Question: The antiulcer drug called omeprazole has in its structure: 
 Options:  <0> A benzimidazole heterocycle. <1> A thiol group. <2> A pyrazole heterocycle. <3> A dimethylamino group. <4> A thiozolic heterocycle.
[A]: pharmacology


[Q]: Question: Which statement regarding the substitution treatment with L-thyroxine in a patient with hypothyroidism is correct? 
 Options:  <0> Thyroid function will be determined 48 hours after its initiation to assess efficacy. <1> In elderly patients and in order to improve symptomatology quickly, treatment with L-T4 is started at a dose of 150-200 micrograms per day. <2> In pregnancy, thyroid hormone requirements usually increase by about 50 micrograms per day, over the previous dose. <3> The medication should be taken in the middle of meals. <4> It is advisable to administer a gastric protector simultaneously to avoid gastritis.
[A]:
medicine