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: In an animal species, the value of the elimination rate constant of a drug with linear pharmacokinetic behavior depends on: 
 Options:  <0> The route of administration. <1> The dose of drug administered. <2> The percentage of administered dose that arrives unaltered to the general circulation. <3> The speed at which the drug reaches systemic circulation. <4> The distribution and elimination of the drug.

SOLUTION: pharmacology

PROBLEM: Question: On the link between the nitrogenous base and the ribose of the nucleotides: 
 Options:  <0> The anomeric carbon of ribose is in alpha configuration. <1> It is an N-glycosidic bond. <2> It involves the C5' of the ribose. <3> It involves phosphate groups. <4> It is of a different nature for each nitrogenous base.

SOLUTION: biology

PROBLEM: Question: Before a 49-year-old man, asymptomatic, with a family history of a father who died of prostate cancer, a PSA (Specific Prostate Antigen) of 5.9 ng / ml was identified in a routine company control, with a PSA ratio free / Total PSA of 11% and that in a digital rectal examination there is an increase in consistency in the right prostatic lobe, what is the following clinical indication? 
 Options:  <0> Ask the patient to perform a transrectal ultrasound and prostate biopsy. <1> Perform a abdominopelvic CT scan. <2> Start treatment with 5 alpha reductase inhibitors to halve PSA levels. <3> Start combined treatment of LHRH analogues and antiandrogens. <4> Perform a bone scan.

SOLUTION:
medicine