Cell Transport Review

Front

What is diffusion?

Back

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

Front

What does it mean that a cell membrane is selectively permeable?

Back

It allows some substances in but not others.

Front

Give a real-life example of something that is selectively permeable.

Back

A window screen.

Front

What is active transport?

Back

The movement of substances across a cell membrane that requires energy.

Front

What is exocytosis?

Back

The process by which a cell expels materials in vesicles.

Front

What is osmosis?

Back

The diffusion of water molecules through a selectively permeable membrane.

Front

What is passive transport?

Back

The movement of substances across a cell membrane without the use of energy.

Front

What is equilibrium in the context of cell transport?

Back

A state where the concentration of molecules is the same throughout a space.

Front

What is the role of the cell membrane?

Back

To protect the cell and control what enters and leaves.

Front

What is facilitated diffusion?

Back

The process of passive transport of molecules across a cell membrane via specific transmembrane proteins.