A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amphetamine stimulus. Amphetamines consist of a group of compounds related to alpha-methylphenethylamine [goid 1975] [evidence IEA]; The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine base linked to a deoxyribose or ribose sugar) esterified with a phosphate moiety at either the 3' or 5'-hydroxyl group of its glycose moiety [goid 6164] [evidence IEA]; Any process which produces a purine nucleoside from derivatives of it, without de novo synthesis [goid 6166] [evidence IEA]; Any process that generates adenine, 6-aminopurine, from derivatives of it without de novo synthesis [goid 6168] [evidence IEA]; Any process that generates guanine, 2-amino-6-hydroxypurine, from derivatives of it without de novo synthesis [goid 6178] [evidence IEA]; The specific actions or reactions of an organism relating to grooming, cleaning and brushing to remove dirt and parasites [goid 7625] [evidence IEA]; The chemical reactions and pathways involving a nucleoside, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide), e.g. adenosine, guanosine, inosine, cytidine, uridine and deoxyadenosine, deoxyguanosine, deoxycytidine and thymidine (= deoxythymidine) [goid 9116] [evidence IEA]; The rupture of cell membranes and the loss of cytoplasm [goid 19835] [evidence IEA]; The progression of the striatum over time from its initial formation until its mature state. The striatum is a large cluster of dopaminergic nerve cells, consisting of the caudate nucleus and the putamen, that controls movement, balance, and walking [goid 21756] [evidence IEA]; The process whereby a relatively unspecialized cell acquires specialized features of a neuron residing in the cerebral cortex [goid 21895] [evidence IEA]; The process whose specific outcome is the progression of a neuron whose cell body is located in the central nervous system, from initial commitment of the cell to a neuronal fate, to the fully functional differentiated neuron [goid 21954] [evidence IEA]; Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways involving dopamine [goid 45964] [evidence IEA]; The expansion of a lymphocyte population by cell division [goid 46651] [evidence IEA]; The process by which the anatomical structures of dendrite are generated and organized. Morphogenesis pertains to the creation of form. A dendrite is a freely branching protoplasmic process of a nerve cell [goid 48813] [evidence IEA]; The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine base linked to a deoxyribose or ribose sugar) esterified with a phosphate moiety at either the 3' or 5'-hydroxyl group of its glycose moiety [goid 6164] [pmid 9824441] [evidence IMP]; Any process which produces a purine nucleoside from derivatives of it, without de novo synthesis [goid 6166] [pmid 9824441] [evidence IMP]; The specific actions or reactions of an organism in response to external or internal stimuli. Patterned activity of a whole organism in a manner dependent upon some combination of that organism's internal state and external conditions [goid 7610] [pmid 16138897] [evidence IMP]; The chemical reactions and pathways involving a nucleoside, a nucleobase linked to either beta-D-ribofuranose (ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleotide), e.g. adenosine, guanosine, inosine, cytidine, uridine and deoxyadenosine, deoxyguanosine, deoxycytidine and thymidine (= deoxythymidine) [goid 9116] [evidence IEA]; Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways involving dopamine [goid 45964] [pmid 8643611] [evidence IMP]; The chemical reactions and pathways involving hypoxanthine, 6-hydroxy purine, an intermediate in the degradation of adenylate. Its ribonucleoside is known as inosine and its ribonucleotide as inosinate [goid 46100] [pmid 9824441] [evidence IMP]; The formation of a protein homotetramer, a macromolecular structure consisting of four noncovalently associated identical subunits [goid 51289] [pmid 9521733] [evidence IDA]