Osmosis Diffusion of Water Diffusion is the movement

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Osmosis: Diffusion of Water • Diffusion is the movement of particles from an area

Osmosis: Diffusion of Water • Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration. • In a cell, water always moves to reach an equal concentration on both sides of the membrane.

Cells in an isotonic solution H 2 O Water Molecule Dissolved Molecule • Most

Cells in an isotonic solution H 2 O Water Molecule Dissolved Molecule • Most cells whether in multicellular or unicellular organisms, are subject to osmosis because they are surrounded by water solutions.

Cells in an isotonic solution • In an isotonic solution, the concentration of dissolved

Cells in an isotonic solution • In an isotonic solution, the concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell. H 2 O Water Molecule Dissolved Molecule

Cells in an isotonic solution • In an isotonic solution, water molecules move into

Cells in an isotonic solution • In an isotonic solution, water molecules move into and out of the cell at the same rate, and cells retain their normal shape. H 2 O Water Molecule Dissolved Molecule

Cells in an isotonic solution • A plant cell has its normal shape and

Cells in an isotonic solution • A plant cell has its normal shape and pressure in an isotonic solution.

Cells in a hypotonic solution • In a hypotonic solution, water enters a cell

Cells in a hypotonic solution • In a hypotonic solution, water enters a cell by osmosis, causing the cell to swell. H 2 O Water Molecule Dissolved Molecule

Cells in a hypotonic solution • Plant cells swell beyond their normal size as

Cells in a hypotonic solution • Plant cells swell beyond their normal size as pressure increases.

Cells in a hypertonic solution • In a hypertonic solution, water leaves a cell

Cells in a hypertonic solution • In a hypertonic solution, water leaves a cell by osmosis, causing the cell to shrink. H 2 O Water Molecule Dissolved Molecule

Cells in a hypertonic solution • In a hypertonic solution, water leaves a cell

Cells in a hypertonic solution • In a hypertonic solution, water leaves a cell by osmosis, causing the cell to shrink. H 2 O Water Molecule Dissolved Molecule

Cells in a hypertonic solution • Plant cells lose pressure as the plasma membrane

Cells in a hypertonic solution • Plant cells lose pressure as the plasma membrane shrinks away from the cell wall.

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