What is Diffusion? How Does it Work? What Factors Affect it? #7

The video tutorial explains diffusion as the net movement of particles from high to low concentration due to random motion. It covers diffusion in gases and liquids, and through cell membranes, highlighting that it's a passive process requiring no energy. The tutorial also discusses factors affecting diffusion rate: concentration gradient, temperature, and surface area.

What is the primary characteristic of diffusion?

• Movement of particles from high to low concentration

• Movement of particles requiring energy

• Movement of particles from low to high concentration

• Movement of particles in a straight line

Which of the following is an example of diffusion in liquids?

• Food coloring spreading in water

• Light passing through a prism

• Sound traveling through air

• Perfume spreading in a room

What type of molecules can typically diffuse through a cell membrane?

• Large molecules like proteins

• Complex carbohydrates

• Small molecules like water

• DNA strands

Why is diffusion considered a passive process?

• It happens due to the random movement of particles

• It needs a catalyst to occur

• It occurs only in the presence of light

• It requires energy from the cell

How does temperature affect the rate of diffusion?

• Higher temperature decreases the rate

• Higher temperature has no effect

• Higher temperature increases the rate

• Higher temperature stops diffusion