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Cellular and Molecular Biology

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Unicellular Eukaryotic Animal Organelle: Water Homeostasis

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In aquatic unicellular animals such as paramecia or amoebae, water is frequently absorbed rapidly through their membrane. These animals have a special intracellular organelle that actively allows them to excrete water on a regular basis.

This organelle is called a

A

water channel .

B

flagellum.

C

mitochondrion.

D

vascular channel.

E

contractile vacuole.