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[1] [2] Vacuoles are essentially enclosed compartments which are filled with water containing inorganic and organic molecules including enzymes in solution, though in certain cases they may contain solids which have been engulfed. Vacuoles are formed by the fusion of multiple membrane vesicles and are effectively just larger forms of these. [3]
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This organism possesses a large central vacuole that is multilobular in structure (lobules radiating from a central spheroid region). [ citation needed ] The entire cell contains several cytoplasmic domains, with each domain having a nucleus and a few chloroplasts. [ 5 ]
Large vacuoles are found in three genera of filamentous sulfur bacteria, the Thioploca, Beggiatoa and Thiomargarita. The cytosol is extremely reduced in these genera and the vacuole can occupy between 40 and 98% of the cell. [145] The vacuole contains high concentrations of nitrate ions and is therefore thought to be a storage organelle. [146]
Vacuolization is the formation of vacuoles or vacuole-like structures, within or adjacent to cells. Perinuclear vacuolization of epidermal keratinocytes is most likely inconsequential when not observed in combination with other pathologic findings.
The smallest known contractile vacuoles belong to Chlamydomonas, with a diameter of 1.5 μm. In Paramecium, which has one of the most complex contractile vacuoles, the vacuole is surrounded by several canals, which absorb water by osmosis from the cytoplasm. After the canals fill with water, the water is pumped into the vacuole.
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The black and white snapper has a wide Indo-Pacific range. It occurs along the eastern coastline of Africa from the Red Sea south as far as South Africa, the Seychelles, islands in the Mozambique Channel, Madagascar and western Mascarenes, east to the Maldives, Laccadives, the Chagos Islands, Cocos (Keeling) Islands and Christmas Island and Sri Lanka.