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Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

Online Dictionary of Invertebrate Zoology: Complete Work - Best Text

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<strong>Online</strong> <strong>Dictionary</strong> <strong>of</strong> <strong>Invertebrate</strong> <strong>Zoology</strong> 557metabolic activities Any forms <strong>of</strong> activity that have to do withmetabolism.metabolic water Water produced in the cells as a by-product<strong>of</strong> metabolism.metabolism n. [Gr. metabole, change; ismos, denoting condition]The sum total <strong>of</strong> chemical reactions occurring in livingmatter. metabolic a. see catabolism, anabolism.metabolite n. [Gr. metabole, change; ites, like] Any by-product<strong>of</strong> a living organism; a metabolized substance.metabranchial lobe or area (ARTHRO: Crustacean) In Decapoda,the posterior branchial region <strong>of</strong> the carapace.metacentric a. [Gr. meta, after; kentron, center <strong>of</strong> circle]Having the centromere situated along the chromosome,except at or near the tip, e.g., J- or V-shaped in metaphase.see telocentric, acrocentric.metacephalon n. [Gr. meta, after; kephale, head] (ARTHRO:Insecta) In Diptera, the area behind the mouth extendingup toward the neck.metacercaria n. [Gr. meta, after; keros, tail] (PLATY: Trematoda)The stage succeeding the cercarial, following loss <strong>of</strong>tail; it may invade the definitive host (blood flukes) or maybecome encysted and await passive transfer to that host.metacerebrum n. [Gr. meta, after; L. cerebrum, brain] (AR-THRO: Crustacea) Ganglion <strong>of</strong> antennal somite; tritocerebrum.metacestode n. [Gr. meta, after; kestos, girdle; eidos, form](PLATY: Cestoda) The developmental stage <strong>of</strong> the plerocestoidwhere proglottids are evident but generative organsare not fully mature.metachemogenesis n. [Gr. meta, change <strong>of</strong>; chemeia, infusion;genesis, beginning] (ARTHRO: Insecta) In holometabolousforms, post-emergence biochemical maturation;does not include sexual maturation.metachromasia, metachromasis, metachromasy n. [Gr.meta, change <strong>of</strong>; chroma, color] Staining <strong>of</strong> tissue componentsin different colors by a single dye.metacnemes n.pl. [Gr. meta, after; kneme, leg] (CNID: Antho-

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