Science 10: Movement of Water and Solutes

What is a solute?

• The liquid substances are dissolved in

• A dissolved substance

• Both the liquid and the dissolved substance

• None of the above

Remember, in nature substances tend to follow a concentration gradient. Going WITH the gradient means solutes go from HIGH -> LOW concentrations. How could we characterize solutes going AGAINST the gradient?

• LOW -> LOW

• HIGH -> LOW

• HIGH -> HIGH

• LOW -> HIGH

True or false. Diffusion is the movement of all substances, however, we call the diffusion of water osmosis.

• True

• False

Select all that apply. Passive Transport...

• Does not require energy

• Requires energy

• Includes passive diffusion

• Includes facilitated diffusion

Molecules like CO₂ can follow their concentration gradient from HIGH to LOW by traveling directly through the plasma membrane. This is an example of

• Active Transport

• Facilitated Diffusion

• Passive Diffusion

• Osmosis

When would molecules following a concentration gradient from HIGH to LOW need to use facilitated diffusion? Select all that apply.

• Too Large

• Has an electrical charge

• It doesn't feel doing the work itself

• Too small

If the cells in Image A are in an isotonic solution, then the cells in Image B are in a (a)   solution.

If the cells in Image A are in an isotonic solution, then the cells in Image B are in a (a)   solution.

Select all that apply. Active transport...

• Goes against the concentration gradient

• Goes along the concentration gradient

• Does not require energy

• Requires energy

If the arrow describes the movement of our solute, then what process is this?

• Facilitated Diffusion

• Active Transport

• No Movement

• Passive Diffusion