Multiple Choice
In plant cells, which organelle primarily stores water and other dissolved substances (cell sap) to help maintain turgor pressure and support cell structure?
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13. Intracellular Protein Transport
Plant Vacuole
Multiple Choice
In plant cells, what is the primary function of the central vacuole?
A
Produce ATP through oxidative phosphorylation on the inner membrane
B
Synthesize proteins for secretion using membrane-bound ribosomes
C
Maintain turgor pressure and store water, ions, and other solutes to support cell structure and homeostasis
D
Package and sort newly synthesized proteins for delivery to the plasma membrane
Verified step by step guidance1
Identify the organelle in question: the central vacuole, which is a large, membrane-bound compartment found in plant cells.
Recall the main functions of the central vacuole, which include storage of water, ions, nutrients, and waste products, as well as maintaining cell turgor pressure.
Understand that turgor pressure is the pressure exerted by the central vacuole against the cell wall, which helps maintain the plant cell's rigidity and structural support.
Recognize that the central vacuole does not produce ATP (which is the function of mitochondria) nor synthesize proteins (which occurs in ribosomes), nor package proteins (a function of the Golgi apparatus).
Conclude that the primary function of the central vacuole is to maintain turgor pressure and store water, ions, and other solutes, thereby supporting cell structure and homeostasis.
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