EOC Cells Vocab Two

Front

Active Transport

Back

The movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, using energy.

Front

Passive Transport

Back

The movement of molecules across a cell membrane without the use of energy, from a region of higher concentration to a region of lower concentration.

Front

Osmosis

Back

The diffusion of water molecules through a selectively permeable membrane from a region of lower solute concentration to a region of higher solute concentration.

Front

Diffusion

Back

The movement of particles from an area of higher concentration to an area of lower concentration.

Front

Facilitated Diffusion

Back

The process of spontaneous passive transport of molecules or ions across a biological membrane via specific transmembrane integral proteins.

Front

Concentration Gradient

Back

The gradual difference in concentration of a solute in a solution between two regions.

Front

Endocytosis

Back

The process by which a cell takes in materials by engulfing them in a vesicle.

Front

Exocytosis

Back

The process by which a cell expels materials using vesicular transport.

Front

Phospholipid Bilayer

Back

A double layer of phospholipids that makes up plasma and organelle membranes.

Front

Protein Pumps

Back

Transport proteins that require energy to move substances across cell membranes.