Osmosis is the movement of water molecules from an area of high concentration to an area of low concentration across a selectively permeable membrane. In plants, osmosis helps maintain turgor pressure, which keeps the plant from wilting by maintaining the rigidity of plant cells.

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Osmosis

Question 43

Multiple Choice

Osmosis

A) helps cells maintain turgor pressure in plants.
B) moves macromolecules from one cell to another.
C) facilitates the "flipping" of proteins from one side of the membrane to the other.
D) keeps concentrations uniform in all cells.
E) regulates the membrane potential of the cell.

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