What is the pressure of cell contents against the cell wall called?

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Study for the Leaving Certificate Biology Test. Prepare with flashcards and multiple-choice questions. Each question includes hints and explanations to enhance learning. Get ready to excel in your exam!

Multiple Choice

What is the pressure of cell contents against the cell wall called?

Explanation:
Turgor pressure is the pressure exerted by the cell contents against the cell wall, produced when water enters the cell by osmosis and the vacuole swells. The rigid cell wall prevents bursting, so the inward push of the membrane and cytoplasm against the wall creates this outward pressure, which keeps plant tissues firm and upright. If water leaves and the pressure drops, the membrane can pull away from the wall in a process called plasmolysis. Osmosis is the water movement causing this pressure, while hydrostatic pressure is a general term for fluid pressure and doesn’t specify the plant cell context.

Turgor pressure is the pressure exerted by the cell contents against the cell wall, produced when water enters the cell by osmosis and the vacuole swells. The rigid cell wall prevents bursting, so the inward push of the membrane and cytoplasm against the wall creates this outward pressure, which keeps plant tissues firm and upright. If water leaves and the pressure drops, the membrane can pull away from the wall in a process called plasmolysis. Osmosis is the water movement causing this pressure, while hydrostatic pressure is a general term for fluid pressure and doesn’t specify the plant cell context.

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