Cells — Basic Units of Life: Vacuoles

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5 Terms

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<ol start="129"><li><p>Vacuole</p></li></ol><p></p>

  1. Vacuole


A fluid-filled organelle found in the cytoplasm of most plant cells. A plant cell usually has one large vacuole that occupies much of its volume.

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<ol start="130"><li><p>Tonoplast</p></li></ol><p></p>

  1. Tonoplast


The selectively permeable, single membrane surrounding a vacuole.

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  1. Cell sap


The liquid inside a vacuole, consisting of water, mineral salts, sugars and amino acids.

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  1. Functions of vacuoles


Store water and other substances, help with digestion and excretion of cellular waste, and maintain the shape of plant cells.

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  1. Turgor pressure


The outward pressure produced when a water-filled vacuole pushes the cell membrane against the cell wall.