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: On the molecular biology of cancer: 
 Options:  <0> Oncogenes are mutated derivatives of normal genes, called protooncogenes, whose function is to promote cell proliferation or survival. <1> Oncogenes are genes that synthesize proteins that inhibit cell proliferation. <2> The tumor suppressor genes synthesize proteins that inhibit cell death. <3> Protooncogenes synthesize proteins that promote cell death. <4> Apoptosis is a form of activation of proto-oncogenes.
chemistry

Question: In a hospitalization unit, 15% of elderly people with dementia enter the year, most of them in very advanced stages. Pain is a frequent symptom in this type of patients. Point out the correct answer in patients with very advanced dementia: 
 Options:  <0> Untreated pain may manifest by agitation. <1> The Analog Visual Scale is the most appropriate for the assessment of pain due to its simplicity. <2> One-dimensional subjective scales are those recommended by experts to assess pain. <3> There are no specifically available scales designed to assess pain. <4> The administration of opioids for pain control is discouraged.
nursery

Question: Primary amines give condensation reactions with aldehydes and ketones producing: 
 Options:  <0> Iminas. <1> Enaminas <2> Amides <3> Hydrazines <4> Purines.

chemistry