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Diffusion Quiz
1. True or False: Diffusion is the movement of molecules from an area of
low amount to an area of high amount.
2. True or False: Diffusion does not require energy.
3. Define equilibrium.
4. What is osmosis?
5. How do you keep your blood cells from bursting?
6. During diffusion, which way to molecules move?
a) Molecules flow down the concentration gradient.
b) Molecules flow against the concentration gradient.
c) From an area of low concentration to an area of high concentration.
d) none of the above
7. Which best describes an hypertonic solution?
a) The solution outside of the cell has a lower concentration of dissolved
material than the inside of the cell.
b) The solution outside of the cell has a higher concentration of dissolved
material than the inside of the cell.
c) The solution outside of the cell has an equal concentration of dissolved
material as the inside of the cell.
d) none of the above
8. What should happen to cells in a hypotonic environment?
a) Water will flow through the cell in both directions.
b) Cells should swell and may burst.
c) Cells should shrink and shrivel.
d) Nothing, the cells should be fine.
9. Which of the following statements about diffusion is not true?
a) Diffusion is a natural process.
b) Molecules flow down their concentration gradient.
c) Molecules cannot move at equilibrium.
d) All of the above statements are true.
10. Which is more likely to diffuse through the cell membrane?
a) a starch molecule
b) a protein
c) a sodium ion
d) DNA