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: Acetylation of histones affects transcription:
Options: <0> Blocking the incorporation of other components of the transcription machinery. <1> Preventing the remodeling of chromatin. <2> Facilitating the action of helicases. <3> Decreasing sensitivity to nuclear receptors. <4> Reducing the affinity of histones for DNA.

SOLUTION: chemistry

PROBLEM: Question: The aldol condensation gives rise to:
Options: <0> , -unsaturated amides. <1> Saturated amides. <2> , -unsaturated carbonyl compounds. <3> Chiral compounds. <4> , -unsaturated carbonyl compounds.

SOLUTION: chemistry

PROBLEM: Question: In a patient connected to invasive mechanical ventilation, when all movements are generated by the ventilator, supplying a certain volume with a constant flow during a preset time, without allowing the synchronization with spontaneous or additional respirations of the patient, we refer to:
Options: <0> Assisted ventilation <1> Controlled mechanical ventilation. <2> Synchronized intermittent mandatory ventilation. <3> Spontaneous ventilation with continuous positive pressure. <4> Positive pressure at the end of expiration.

SOLUTION:
nursery