Vesicles, vacuoles and plant cell walls

Vesicles: membrane-bound sacs found in cells (can be visualised as a bubble of liquid). They are made up of a variety of molecules and can form naturally or prepared. They are used to store or carry different substances around the cell. Most vesicles have specialised functions, depending on the materials they contain.

Vacuoles: found in all plant and fungal cells and maintains cell stability. It is filled with water containing organic and inorganic molecules so that it pushes the cytoplasm against the cell wall, making the cell turgid and helps support the plant.

Plant cell walls: found on the outside of plant cell surface membranes. It is made up of cellulose, which forms a sieve-like network of strands. This makes the cell wall strong. It is held rigid by the pressure of the fluid inside the cell (turgor pressure) so it supports the cell and the whole plant. 


  • Turgid-describes a cell that is full of water and the pressure of the cell wall prevents more water entering.
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