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.

Question: An essential characteristic of plasmids is: 
 Options:  <0> Be able to integrate into the genome of the host cell. <1> Direct the process of bacterial conjugation. <2> Carry genes for antibiotic resistance. <3> Replicate autonomously. <4> Being circular DNA molecules.
biology

Question: A pregnant woman of 31 weeks goes to the emergency department referring loss of fluid through the vagina. Objective speculum exploration of clear fluid through the external cervical os. It is apyletic. The cardiotocographic record does not reveal contractions and the fetal heart rate is normal. The ultrasound scan reveals no malformations and the cervix is ​​not shortened. What therapeutic combination would it indicate? 
 Options:  <0> Tocolytics, corticosteroids and antibiotics. <1> Tocolytics and antibiotics. <2> Tocolytics and corticosteroids. <3> Oxytocin, corticosteroids and antibiotics. <4> Corticosteroids and antibiotics
medicine

Question: Transcription factors: 
 Options:  <0> They bind to chromatin by interaction with histone H2A. <1> They bind to RNA and regulate the start of transcription. <2> They join the DNA. <3> They are organized into nucleosomes. <4> They regulate DNA methylation.

pharmacology