Photosynthetic organelle of higher plants. Lens-shaped and rather variable in size but approximately 5µm long. Surrounded by a double membrane and contains circular DNA (though not enough to code for all proteins in the chloroplast). Like the mitochondrion, it is semi-autonomous. It resembles a cyanobacterium from which, on the endosymbiont hypothesis, it might be derived. The photosynthetic pigment, chlorophyll, is associated with the membrane of vesicles (thylakoids) that are stacked to form grana.

Dictionary of molecular biology. 2004.

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  • Chloroplast — Chlo ro*plast, n. [Pref. chloro + Gr. ? to mold, form.] (Biol.) A plastid containing chlorophyll, developed only in cells exposed to the light. Chloroplasts are minute flattened granules, usually occurring in great numbers in the cytoplasm near… …   The Collaborative International Dictionary of English

  • chloroplast — chloroplast. См. хлоропласт. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • chloroplast — 1887, shortened from Ger. chloroplastid (1884), from CHLORO (Cf. chloro ) + PLAST (Cf. plast) …   Etymology dictionary

  • chloroplast — ► NOUN ▪ a structure in green plant cells which contains chlorophyll and in which photosynthesis takes place. ORIGIN from Greek khl ros green + plastos formed …   English terms dictionary

  • chloroplast — [klôr′ə plast΄] n. [ CHLORO + PLAST] a green, oval plastid containing chlorophyll and carotenoids and found in the cytoplasm of green plants and blue green algae: see CHROMOPLAST, PHOTOSYNTHESIS …   English World dictionary

  • Chloroplast — Simplified structure of a chloroplast Chloroplasts (English pronunciation: /ˈklɒrəplæsts/) are organelles found in plant cells and other eukaryotic organisms that conduct photosynthesis. Chloroplasts capture light energy to conserve …   Wikipedia

  • Chloroplast — Chloroplasten in der Blattspreite des Laubmooses Plagiomnium affine …   Deutsch Wikipedia

  • chloroplast — chloroplastic, adj. /klawr euh plast , klohr /, n. Bot. a plastid containing chlorophyll. See diag. under cell. [1885 90; CHLORO(PHYLL) + PLAST] * * * Microscopic, ellipsoidal organelle in a green plant cell. It is the site of photosynthesis. It… …   Universalium

  • chloroplast — UK [ˈklɔːrəʊplæst] / US [ˈklɔroʊˌplæst] noun [countable] Word forms chloroplast : singular chloroplast plural chloroplasts biology a part of a plant cell that contains chlorophyll and where photosynthesis takes place …   English dictionary

  • chloroplast — chloroplastas statusas T sritis augalininkystė apibrėžtis Chlorofilo turinti augalo ląstelės plastidė, kurioje vyksta fotosintezė. atitikmenys: angl. chloroplast rus. хлоропласт …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

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