Movement Of Substances

Front 1

Diffusion

Back 1

Net movement of particles from a region of higher concentration to lower concentration

Front 2

Diffusion does not require

Back 2

A membrane

Front 3

Fully permeable membrane

Back 3

Allow all solutes and particles to move in all directions

Front 4

Osmosis

Back 4

Movement of water particles from a higher water potential to lower water potential through a partially permeable membrane

Front 5

Water potential

Back 5

Measure of tendency for water to move from one place to another

Front 6

When animal cell placed in dilute solution

Back 6

1. Net flow of water into cell from the surroundings

2. Cell swells and bursts

Front 7

When animal cell placed in concentrated solution

Back 7

1. Water flow out of the cell into surroundings

2. Cell shrinks

Front 8

When plant cell is placed in dilute solution

Back 8

1. Water flow into vacuole

2. Vacuole swells

3. Cell wall prevents and exerts opposing pressure

4. Cell is turgid

Front 9

When plant cell placed in concentrated solution

Back 9

1. Net flow of water out of cell to surroundings

2. Vacuole becomes flaccid

3. Pulls cytoplasm away from the cell wall

4. Cell is plasmolysed

Front 10

Turgor pressure function

Back 10

Keep the shape for soft tissues in plants

Front 11

Active transport

Back 11

Energy is used to move particles of a substance against a comcentration gradient from lower to higher concentration