TASK DEFINITION: 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.
PROBLEM: Question: The main virulence factor of Streptococcus pneumoniae is one (one):
Options: <0> Fimbria. <1> Capsule. <2> Scourge <3> Endotoxin <4> Adhesin

SOLUTION: biology

PROBLEM: 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

SOLUTION: biology

PROBLEM: Question: When dissolving a non-volatile solute in a solvent forming a diluted solution, it is observed:
Options: <0> An increase in the freezing temperature of the solvent. <1> An increase in the boiling temperature of the solvent. <2> An increase in the vapor pressure of the solvent. <3> An increase in the chemical potential of the solvent. <4> A change in colligative properties depending on the type of solute.

SOLUTION:
pharmacology