Which of the following is not a function of the plant vacuole?

• A. Maintain turgor pressure
• B. Regulate cytosolic pH
• C. Support protein transfer in the plant cell
• D. Store nutrients and solutes

Answer: (C)

Verified step by step guidance

1. Understand the role of the plant vacuole: The vacuole is a membrane-bound organelle in plant cells that serves several functions, including maintaining turgor pressure, regulating cytosolic pH, and storing nutrients and solutes.
2. Define turgor pressure: Turgor pressure is the pressure of the cell contents against the cell wall in plant cells, which is crucial for maintaining the plant's structure and rigidity.
3. Explore pH regulation: The vacuole helps in regulating the cytosolic pH by sequestering excess ions and maintaining an acidic environment within itself, which is important for cellular homeostasis.
4. Consider nutrient and solute storage: Vacuoles store a variety of substances, including nutrients, ions, and waste products, which are essential for the cell's metabolism and overall function.
5. Identify the incorrect function: Supporting protein transfer is not a primary function of the plant vacuole. Protein transfer is typically associated with other organelles like the endoplasmic reticulum and Golgi apparatus.