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Pyrenoid


pyrenoid Part of the chloroplast that synthesizes and stores polysaccharides.
pyrimidine An organic base composed of a single ring of carbon and nitrogen atoms; parent substance of several bases found in nucleic acids.
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pyrenoid
A region of starch formation found in the chloroplasts of various algae, for example, Chlamydomonas.
Covered in Lab 6 Unicellular and Filamentous Organization ...
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Boraas (1983) reported the induction of multicellularity in a strain of Chlorella pyrenoidosa (since reclassified as C. vulgaris) by predation.
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Autotrophic, unicellular forms with a single, cup-shaped chloroplast and two apically inserted flagella, these small cells also possess a contractile vacuole and pyrenoid. Excess sugars are stored as starch surrounding the pyrenoid.
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Their function differ from the leukoplasts in plants. Etioplast, amyloplast and chromoplast are plant-specific and do not occur in algae. Algal plastids may also differ from plant plastids in that they contain pyrenoids.
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