Unit 2 Vocabulary

The movement of particles across a membrane from an area of lower concentration to an area of higher concentration; requires energy

• Active Transport

• Passive Transport

• Osmosis

• Diffusion

• The movement of particles across a membrane from an area of higher concentration to an area of lower concentration;

• does not require energy

• Active Transport

• Passive Transport

• Osmosis

• Diffusion

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

• Active Transport

• Passive Transport

• Osmosis

• Diffusion

The diffusion of water from an area of higher concentration to an area of lower concentration.

• Active Transport

• Passive Transport

• Osmosis

• Diffusion

The regulation of an organism’s internal environment in order to maintain conditions suitable for survival.

• Homeostasis

• Active Transport

• Endocytosis

• Exocytosis

The difference in the amount of a substance from one location to another.

• Concentration Gradient

• Permeability

• Diffusion

• Facilitated Diffusion

The taking in of matter by a living cell.

• Endocytosis

• Exocytosis

• Diffusion

• Facilitated Diffusion

The process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane.

• Endocytosis

• Exocytosis

• Diffusion

• Facilitated Diffusion

The transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration with the help of a transport molecule.

• Endocytosis

• Exocytosis

• Diffusion

• Facilitated Diffusion

A protein molecule that is attached to, or associated with, the membrane of a cell or an organelle.

• Membrane Protein

• Sodium Potassium Pump

• Facilitated Diffusion

• Osmosis