Bio St 4.2.2

Front

What is Endocytosis?

Back

A form of active transport where cells engulf substances to bring them into the cell.

Front

What regulates what enters and leaves a cell?

Back

Cell Membrane.

Front

What does the sodium-potassium pump do?

Back

It pumps potassium ions into the cell and sodium ions out of the cell.

Front

What type of transport uses ATP?

Back

Active Transport.

Front

Name three types of active transport.

Back

Sodium/potassium Pump, Endocytosis, Exocytosis.

Front

What is Exocytosis?

Back

A process where cells expel materials in vesicles.

Front

What is the difference between active and passive transport?

Back

Active transport requires energy (ATP), while passive transport does not.

Front

What is facilitated diffusion?

Back

A type of passive transport that uses protein channels to help move substances across the cell membrane.

Front

What is the role of the cell membrane?

Back

It acts as a barrier that regulates the movement of substances in and out of the cell.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.