TASK DEFINITION: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
PROBLEM: Question: The R-bands of human metaphase chromosomes: 
 Options:  <1> They contain DNA rich in AT pairs. <2> They have high gene density. <3> They contain poor DNA in GC pairs. <4> They replicate at the end of phase S. <5> They have low gene density.

SOLUTION: 2

PROBLEM: Question: The oppressive / tightening pain, of light to moderate intensity, of bilateral localization and that does not worsen with routine physical activity, is what occurs in: 
 Options:  <1> Pelvic pain <2> The burnout. <3> Asthma. <4> Irritable bowel syndrome. <5> Tension headache.

SOLUTION: 5

PROBLEM: Question: The reactions in which the kinetics does not depend on the nucleophilic concentration, are reactions: 
 Options:  <1> Radicals <2> SN1. <3> Pericyclic. <4> SN2. <5> None of the above.

SOLUTION:
2