Understanding Diffusion

What is the primary reason smoke from an incense stick spreads across a room?

• Humidity levels

• Air currents in the room

• Diffusion of particles

• Temperature changes

What is required for diffusion to occur between two areas?

• A humidity gradient

• A temperature difference

• A concentration gradient

• A pressure difference

How does a large concentration gradient affect the rate of diffusion?

• It reverses the direction of diffusion

• It has no effect on diffusion

• It slows down the diffusion

• It speeds up the diffusion

In the context of diffusion, what happens when the concentration of particles is similar on both sides?

• Diffusion reverses direction

• Diffusion occurs at a faster rate

• Diffusion occurs at a slower rate

• Diffusion stops completely

Which of the following is an example of diffusion in living organisms?

• Nutrients being absorbed in the stomach

• Oxygen binding to hemoglobin in red blood cells

• Water evaporating from leaves

• Carbon dioxide being exhaled