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: A parameter of great importance in chromatography is the equivalent height of theoretical plate (H). The van Deemter equation describes the behavior of a filler column for gas-liquid chromatography, where H = A + (B / u) + Cu, so that: 
 Options:  <0> C is the parameter that is taken as a measure of the quality of the filling of the column. <1> A is the coefficient that collects the contribution of longitudinal diffusion. <2> B is the parameter that is related to the resistance to the transfer of matter that opposes the stationary phase. <3> u is the linear velocity of the mobile phase. <4> B is canceled in columns without filling.

SOLUTION: chemistry

PROBLEM: Question: The order of the stages of the cell cycle is: 
 Options:  <0> S, G1, Mitosis, G2. <1> G2, G1, S, Mitosis. <2> G1, Mitosis, G2, S. <3> S, G0, Mitosis, G1. <4> G1, S, G2, Mitosis.

SOLUTION: biology

PROBLEM: Question: The O antigen used in the classification of Gram negative bacteria corresponds to: 
 Options:  <0> The flagellar proteins. <1> Components of the capsule. <2> The peptidoglycan. <3> The polysaccharide of lipopolysaccharides. <4> Plasma membrane proteins.

SOLUTION:
biology