Cell Transport

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration until they are evenly distributed.

Front

What is osmosis?

Back

Osmosis is the movement of water molecules through a selectively permeable membrane from an area of low solute concentration to an area of high solute concentration.

Front

What is active transport?

Back

Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy.

Front

What is facilitated diffusion?

Back

Facilitated diffusion is the process of passive transport of molecules across a cell membrane via specific transmembrane integral proteins.

Front

What does 'isotonic' mean?

Back

Isotonic refers to a solution that has the same concentration of solutes as another solution, resulting in no net movement of water.

Front

What does 'hypertonic' mean?

Back

Hypertonic refers to a solution that has a higher concentration of solutes compared to another solution, causing water to move out of the cell.

Front

What does 'hypotonic' mean?

Back

Hypotonic refers to a solution that has a lower concentration of solutes compared to another solution, causing water to move into the cell.

Front

What is endocytosis?

Back

Endocytosis is the process by which cells engulf substances from their external environment, bringing them into the cell.

Front

What is exocytosis?

Back

Exocytosis is the process by which cells expel materials to the outside environment, often using vesicles.

Front

What is concentration?

Back

Concentration is the number of molecules of a substance in a given volume.