Question

Identify the examples of diffusion in the list below. Check all that apply.

Answer 1

Answer;

• A teacher takes the cap off a permanent marker. A few minutes later, students at the back of the classroom complain about the odor of the marker.
• A cooking school student burns a piece of toast. Soon, the entire kitchen smells like burnt toast.
• Toxic fumes produced by a chemical factory are detected in the air in a town several miles away.

Explanation;

• Diffusion is a type of passive transport that involves the movement of particles from a region of high concentration to a region of low concentration.
• Diffusion takes place in liquids and gases, since their particles can move randomly from one region to another.
• Therefore, diffusion results from the random movement of particles in which the net movement is down the concentration gradient  that is, from a region of high concentration to a region of low concentration.

Answer 2

The first, second, and fourth are the answer just did the question