Diffusion and Osmosis

Front

What is passive transport?

Back

Type of membrane transport that does not require energy to move substances across cell membranes.

Front

In diffusion, molecules are trying to reach...

Back

An equilibrium.

Front

Which process does NOT require energy from the cell?

Back

Facilitated diffusion.

Front

What is active transport?

Back

Movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration, requiring energy.

Front

What is NOT a type of passive transport?

Back

Active transport.

Front

Define diffusion.

Back

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

Front

What is osmosis?

Back

The diffusion of water molecules across a selectively permeable membrane.

Front

What is facilitated diffusion?

Back

A process that allows substances to cross membranes with the assistance of special proteins.

Front

What is a selectively permeable membrane?

Back

A membrane that allows certain molecules to pass through while blocking others.

Front

What is the difference between active transport and passive transport?

Back

Active transport requires energy to move substances against their concentration gradient, while passive transport does not.