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.
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Question: 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.

Answer: chemistry

Question: Question: What kind of image appears when the individual does not fixate his attention on it and, on the contrary, disappears when he concentrates on the experience?
Options: <0> Consecutive images <1> Mnemic images. <2> Hallucinoid images. <3> Abnormal images <4> Parasitic images

Answer: psychology

Question: Question: It is characteristic of the alpha helix:
Options: <0> Present 3.6 amino acid residues per turn. <1> Be levorotatory <2> Be stabilized by intrachain disulfide bridges. <3> Present ionic bonds between amino and ketone groups loaded with peptide bonds. <4> Have the side chains of the amino acids inwards.

Answer:
biology