Central vacuole

Definition

The central vacuole is a large, membrane-bound organelle found in plant cells. It serves various functions including storage, waste disposal, protection, and growth regulation.

5 Must Know Facts For Your Next Test

1. The central vacuole can occupy up to 90% of a plant cell's volume.
2. It helps maintain turgor pressure against the cell wall, contributing to the rigidity of the plant.
3. The central vacuole stores nutrients, waste products, and pigments that give flowers their color.
4. It contains enzymes that can break down macromolecules much like lysosomes in animal cells.
5. The central vacuole plays a role in cell growth by absorbing water and expanding.

Review Questions

Related terms

Cell Wall:

A rigid layer outside the plasma membrane of plant cells that provides structural support and protection.

Plasma Membrane: A selective barrier that surrounds the cell, controlling what enters and exits.

Chloroplast:

An organelle found in plant cells that conducts photosynthesis by converting light energy into chemical energy.