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.
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Question: Question: When using the Callista Roy model in practice, the organization of the factors that influence the person's responses are grouped as stimuli: 
 Options:  <0> Innatos and acquired. <1> Adaptive and ineffective <2> Focal, contextual and residual. <3> Internal and external. <4> Physiological, psychological and sociocultural.

Answer: nursery


Question: Question: Mitochondrial oxidative phosphorylation is regulated by: 
 Options:  <0> Mitochondrial steroid hormones. <1> Apoptosis <2> Thermogenin <3> The cytochrome c. <4> The cellular energy charge.

Answer: chemistry


Question: Question: Within head and neck carcinomas, what type of tumor is most obviously related to the human papillomavirus? 
 Options:  <0> Squamous cell carcinoma of the larynx. <1> Squamous cell carcinoma of the oropharynx. <2> Squamous cell carcinoma of the hypopharynx. <3> Adenocarcinoma sinonasal. <4> Undifferentiated carcinoma of cavum.

Answer:
medicine