Active Transport

Front

What is active transport?

Back

Movement of particles through the cell membrane from a region of lower concentration to a region of higher concentration using energy in the form of ATP.

Front

What are the three types of active transport?

Back

Sodium/potassium pump, Endocytosis, Exocytosis.

Front

Describe the structure of a cell's plasma membrane.

Back

Proteins embedded in two layers of phospholipids.

Front

What is the difference between active and passive transport?

Back

Active transport uses ATP (energy) while passive transport does not require energy.

Front

What is the sodium/potassium pump?

Back

A type of active transport that moves sodium ions out of the cell and potassium ions into the cell against their concentration gradients.

Tags

NGSS.HS-LS1-3

Front

What is endocytosis?

Back

The process by which cells take in substances by engulfing them in a membrane.

Front

What is exocytosis?

Back

The process by which cells expel materials in vesicles that fuse with the plasma membrane.

Front

What is diffusion?

Back

The net movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

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

Tags

NGSS.MS-LS1-2

Front

What role does ATP play in active transport?

Back

ATP provides the energy required to move substances against their concentration gradient.