A mixture that forms when one substance dissolves another.

• concentration gradient

• solution

• solute

• solvent

When making a glass of Tang, the solute is the

• water

• Tang

In the ocean, the solvent is the

• water

• salt

The best term to describe the distribution of molecules in the picture is

• equilibrium

• isotonic

• concentration gradient

• homeostasis

During diffusion, molecules will move

• from a low to high concentration

• equally in all directions

• from a high to low concentration

• only when supplied with energy

Check all forms of cell transport that do NOT require energy

• diffusion

• facilitated diffusion

• active transport

• osmosis

When diffusion takes place through a protein channel

• osmosis

• facilitated diffusion

• diffusion

• active transport

Check all factors that have an effect on the rate of diffusion

• temperature

• concentration gradient

• surface area

• energy supply

Molecules at a higher temperature will diffuse ___ as compared to molecules at a lower temperature.

• faster

• slower

• at an equal rate

At equilibrium, all molecules stop moving as they are now balanced.

• True

• False