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.

Example Input: Question: Which of the following actions does insulin exert on liver tissue? 
 Options:  <0> It inhibits the uptake of glucose. <1> Activates lipolysis. <2> Inhibits the synthesis of fatty acids. <3> Activates glycogen synthesis. <4> Activates glycogenolysis.
Example Output: pharmacology

Example Input: Question: To control the expression of certain genes according to population density, bacteria use systems of: 
 Options:  <0> Strict response <1> Two components <2> Perception of the quorum. <3> Densitometric adaptation. <4> Negative activation
Example Output: biology

Example Input: Question: Mycoplasmas: 
 Options:  <0> They do not contain phospholipids in their membrane. <1> They have a positive Gram type wall. <2> They contain mycolic acids. <3> They grow quickly in simple means. <4> They are naturally insensitive to penicillin.
Example Output:
biology