Diffusion

Front

What is diffusion?

Back

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

Front

In which states of matter does diffusion occur?

Back

Diffusion occurs in solids, liquids, and gases.

Front

What happens to oxygen molecules when there is a higher concentration in the blood than in an organ?

Back

Oxygen molecules move out of the blood into the organ.

Front

What is a concentration gradient?

Back

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

Front

What is the direction of diffusion?

Back

Molecules move from areas of high concentration to areas of low concentration.

Front

True or False: Diffusion can only occur in liquids and gases.

Back

False. Diffusion can occur in solids, liquids, and gases.

Front

What happens to the concentration of dye in a cup over time?

Back

The concentration of dye becomes more uniform as it diffuses throughout the liquid.

Front

What is the effect of temperature on diffusion?

Back

Higher temperatures increase the energy of molecules, leading to faster diffusion.

Front

What is osmosis?

Back

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

Front

How does diffusion relate to cellular respiration?

Back

Oxygen diffuses into cells where it is needed for cellular respiration, while carbon dioxide diffuses out.