Chapter 3 - Movement of Substances

Which of the options correctly define diffusion?

• net movement of particles against a concentration gradient

• net movement of particles down a concentration gradient

• movement of particles from higher to lower concentration

• movement of particles from lower to higher concentration

When salt water and normal water is mixed, what happens?

• salt is absorbed by the water

• salt particles diffuse towards the normal water

• water particles diffuse towards the salt water

• water is absorbed by the salt

Which of the following explains what happened to the cells in the image?

• The cell was placed in a solution of high water potential

• The cell was placed in a solution of low water potential

• The cell was placed in a high concentration of water

• The cell was placed in a low concentration of water

A plant cell that has been placed in a solution with high water potential will become (a)   .

A plant cell that has been placed in a solution with low water potential will become (a)   .

Which of the following processes can occur in a living cell?

• Diffusion

• Osmosis

• Active Transport