Membrane Transport

Front

Hydrophobic

Back

Does not mix with water.

Front

Diffusion of water through a selectively permeable membrane

Back

Osmosis.

Front

A cell in an isotonic solution will...

Back

Experience water movement in both directions.

Front

Some substances, but not all, can pass directly through the cell membrane by passive or active transport

Back

Semipermeable.

Front

A difference in the concentration of a substance across a distance. High in one place, low in another place.

Back

Concentration Gradient.

Front

The process by which molecules move from an area of higher concentration to an area of lower concentration.

Back

Diffusion.

Front

The movement of molecules across a cell membrane without the use of energy.

Back

Passive Transport.

Front

The movement of molecules against a concentration gradient, requiring energy.

Back

Active Transport.

Front

The process by which a cell takes in material by engulfing it in a membrane.

Back

Endocytosis.

Front

The process by which a cell expels material using vesicles.

Back

Exocytosis.