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: Which of the following traumatic injuries requires, in order to avoid local complications, an earlier treatment? 
 Options:  <0> Posterior traumatic luxation of the hip. <1> Displaced fracture of the femoral neck of the elderly. <2> Trochanteric fracture of the elderly. <3> Cup fracture. <4> Subtrochanteric fracture.
medicine

Question: Mitochondrial oxidative phosphorylation is regulated by: 
 Options:  <0> Mitochondrial steroid hormones. <1> Apoptosis <2> Thermogenin <3> The cytochrome c. <4> The cellular energy charge.
chemistry

Question: Which of the following statements regarding the double-stranded DNA molecule is true? 
 Options:  <0> All the hydroxyl groups of the pentoses participate in the bonds. <1> The bases are perpendicular to the axis. <2> Each chain is identical. <3> Each chain is parallel. <4> Each chain replicates itself.

chemistry