In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

[EX Q]: Las tetraciclinas actúan sobre la
[EX A]: The tetracyclines act on the

[EX Q]: La señora P. R. tiene prescrita sueroterapia a razón de 2 litros de solución salina isotónica en 24 horas; ¿a cuántas gotas/minuto graduaría la perfusión?
[EX A]: Mrs. P. R. has prescribed a serum therapy at a rate of 2 liters of isotonic saline in 24 hours; How many drops / minute would the infusion graduate ?

[EX Q]: ¿Qué núcleo del hipotálamo es el responsable de regular la conducta sexual en hembras?
[EX A]:
Which nucleus of the hypothalamus is responsible for regulating sexual behavior in females ?