| 释义 |
tropo-
combining form repr. Gr. τρόπος turning, etc. (see trope n.), occurring in a few modern technical terms. tropoˈcollagen |trəʊ-| Biochem. [so called from its being able to turn into collagen], the molecular constituent of collagen fibrils, formed of three supercoiled polypeptide chains; tropometer |trəʊˈpɒmɪtə(r)| [-meter], an instrument for measuring the angle of turning or torsion of some part of the body, as the eye-ball or a long bone; tropophil |ˈtrɒpəʊfɪl|, tropophilous |trəʊˈpɒfɪləs| adjs. [Gr. -ϕιλος loving], applied to a plant adapted to a climate which is alternately moist and dry (or cold, the physiological effect of cold being similar to that of dryness); so tropophyte |ˈtrɒpəʊfaɪt| [Gr. ϕυτόν plant], a tropophilous plant; whence tropophytic |-ˈfɪtɪk| a.; tropostereoscope |trɒpəʊˈstɛrɪəʊˌskəʊp|, a stereoscope with an arrangement for rotating the figures so as to bring them into some required position, in experiments on vision; tropoˈtaxis |trəʊ-| Biol. [mod.L., coined in Ger. (A. Kühn Die Orientierung der Tiere im Raum (1919) 60)], a taxis in which an animal's movement is in response to the difference in stimulation of two symmetrically placed receptors; hence tropoˈtactic a., -ˈtactically adv.
1954J. Gross et al. in Proc. Nat. Acad. Sci. XL. 679 We adopted the term ‘*tropocollagen’ to denote the thin, long particles. Ibid., In the present paper is summarized the evidence..that the various morphologically distinguishable forms of collagen are mutually interconvertible and that the unit of collagen structure involved in these changes of aggregation is the tropocollagen particle. 1971Nature 16 Apr. 437/1 It is usually accepted that collagen is composed of tropocollagen molecules 2900 Å long, 15 Å wide. 1982J. F. Van Pilsum in T. M. Devlin Textbk. Biochem. xxi. 1050 The above classifications of collagens are based on the amino acid sequence and composition of the peptide chains in the tropocollagen molecule.
1881Athenæum 11 June 787/1 The *tropometer, an instrument for measuring the angle of torsion of the humerus.
1902I. B. Balfour in Encycl. Brit. XXV. 439/2 Parasitism..occurs in..*tropophil woods of temperate regions, and alpine slopes.
1900B. D. Jackson Gloss. Bot. Terms, *Tropophilous,..loving change of condition, as Tropophytes. 1903tr. Schimper's Plant-Geog. i. i. 21 The vegetation of districts with climates alternately damp and dry or cold, is alternately of a hygrophilous and of a xerophilous character; it is therefore tropophilous.
1900B. D. Jackson Gloss. Bot. Terms, *Tropophyte. 1903tr. Schimper's Plant-Geog. i. i. 3 It appears..necessary to place in a third category all plants whose conditions of life are, according to the season of the year, alternately those of hygrophytes or of xerophytes. All such plants, including..the great majority of the plants composing the Central European flora, should be termed tropophytes.
Ibid., There are hygrophytic, xerophytic, and *tropophytic climates.
1901Titchener Exper. Psychol. I. ii. 272 Ludwig's *tropostereoscope..is..a refined form of the tube stereoscope.
1940Fraenkel & Gunn Orientation of Animals vii. 89 Arthropods..are, above all, the animals which have eyes suitable for *tropo-tactic behaviour. 1979Experientia XXXV. 1457/1 Widely separated nares..would appear to be an adaptation for tropotactic olfactory perception.
1940Fraenkel & Gunn Orientation of Animals vii. 78 The paired receptors of an animal which behaves *tropotactically have been compared with the paired reins of a horse.
1934*Tropotaxis [see telotaxis]. 1979Experientia XXXV. 1457/2 Tubenosed fruit bats locate ripe fruit from among unripe fruit by olfaction, and since detection..has to be made while on the wing, it seems likely that tropotaxis is beneficial. |