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6. If a substance goes from a low to high concentration it is called

  • Active transport
  • Diffusion
  • Osmosis

7. What is diffusion of water in and out of cells?

  • Osmosis
  • Diffusion
  • Active transport

8. Moving up the concentration gradient is...

  • Going from a low concentration to a higher one
  • Going from a high concentration to a lower one

9. Active transport in natural

  • False, it requires energy
  • True, it does not require energy

10. Molecules move randomly however they tend to go to areas of lower concentration where there is more room to move

  • True
  • False

11. What is it called when a cell needs to move a substance up a concentration gradient? (from low to high)

  • Osmosis
  • Active transport
  • Diffusion

12. In diffusion, the membrane only lets certain substances pass through, this is called

  • Selectively permeable
  • Permeable

13. If a substance goes from a high concentration to a lower one it is called...

  • Diffusion
  • Active transport
  • Osmosis

14. Diffusion of water molecules through the cell membrane...

  • Osmosis
  • Diffusion
  • Active transport

15. Can water, oxygen and carbon dioxide diffuse in and out of cells?

  • Yes
  • No