Name: Date: September 16, 2022
Section:
Laboratory Pre/Post Test Questions
Osmosis and Diffusion
1. The diffusion of water molecules through a selectively permeable membrane is:
A. homeostasis B. osmosis C. active transport D. equilibrium
2. All matter is composed of very small particles called:
A. molecules B. ions C. solutes
3. The movement of molecules from a place where there is a greater/higher
concentration to an area where there is lesser/lower concentration is:
A. homeostasis B. diffusion C. osmosis D. active transport
4. A “steady state” or equilibrium that cells maintain internally is:
A. homeostasis B. osmosis C. diffusion D. active transport
5. A selectively permeable membrane:
A. allows all substances to enter and leave
B. prevents all substances from entering or leaving
C. allows certain size substances to enter and leave
D. allows only waste materials to leave
6. Hypotonic solution:
A. has a higher concentration of water and a lower concentration of
solutes than another solution
B. has a higher concentration of solutes and a lower concentration of water
than other solutions
C. has an equal concentration of water and solutes as another solution
D. has more solutes than solvent than another solution
