16.3 - Diffusion CFU

Front

What is diffusion?

Back

Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

Front

What regulates what enters and leaves a cell?

Back

Cell Membrane.

Front

Where is there a low concentration of dye in a cup?

Back

At the bottom of the cup.

Front

How do particles move in diffusion?

Back

From a region of high concentration to a region of low concentration.

Front

What is a concentration gradient?

Back

A concentration gradient is the difference in the concentration of a substance between two areas.

Front

What factors affect the rate of diffusion?

Back

Temperature, concentration gradient, and the size of the molecules.

Front

What is osmosis?

Back

Osmosis is the diffusion of water molecules through a selectively permeable membrane.

Front

What is a selectively permeable membrane?

Back

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

Front

What happens to molecules in a high concentration area?

Back

Molecules will move to areas of lower concentration until equilibrium is reached.

Front

What is equilibrium in the context of diffusion?

Back

Equilibrium is the state where the concentration of molecules is equal throughout a space.