单词 | chemotaxis |
释义 | chemotaxisn. Biology. The orientated or directional movement of a motile cell or organism in response to a gradient of concentration of a particular substance; an instance of this. Cf. chemotropism n. ΘΚΠ the world > life > biology > biological processes > movement > movement in response to stimuli > [noun] > response to chemical chemotaxis1888 chemotropism1890 chemoreflex1898 chemokinesis1900 chemotactism1903 1888 Jrnl. Royal Microsc. Soc. 770 A phenomenon which he [sc. Pfeffer] designates by the term ‘chemotaxis’. 1894 J. S. Burdon-Sanderson in Rep. Brit. Assoc. 1893 26 As a general designation of reactions of this kind Pfeffer devised the term Chemotaxis, or, as we in England prefer to call it, Chemiotaxis. 1902 Encycl. Brit. XXXI. 518 The influence of the chemical substance is either that of attraction or repulsion, the one being known as positive, the other as negative chemotaxis. 1951 Jrnl. Parasitol. 37 339 Is it chemotaxis, or a series of chemotaxes, by which Paragonimus is led through the gut wall into the coelom..and finally into the lungs? 1977 T. I. Storer et al. Elements Zool. (ed. 4) xxii. 370/1 A Drosophila is guided by its olfactory organs to overripe fruit..by a positive chemotaxis to certain alcohols and organic acids in the fermenting fruit. 2006 European Jrnl. Cell Biol. 85 1101/2 It seems that the signalling pathways for chemotaxis and electrotaxis in Dictyostelium converge upstream of directed actin polymerization. Derivatives chemoˈtaxic adj. = chemotactic adj. ΘΚΠ the world > life > biology > biological processes > movement > movement in response to stimuli > [adjective] > response to chemical chemotactic1888 chemotropic1895 chemotaxic1896 chemokinetic1901 chemotrophic1902 chemotactical1908 1896 Lancet 22 Feb. 477/2 Induration, the result of the chemiotaxic action of the toxine, can, therefore, not occur at once. 1899 Amer. Jrnl. Psychol. 10 258 A study directed with a view to ascertain its chemotaxic and tonotaxic reactions. 1997 V. A. Rosario Erotic Imagination iv. 153 Other psychologists described love as..a primeval chemotaxic drive: the attraction of sperm for ova. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022). < n.1888 |
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