Practice Questions 1: Diffusion
1. Please answer the following questions regarding if a red blood cell was placed in sea water.
Where is the greatest concentration of water?
a. inside the cell
b. outside the cell
c. equal inside and outside the cell
2. Which way is water moving?
a. more into than out
b. more out than in
c. water is not moving
d. both directions in equal amounts
3. The outside environment is considered _________________.
a. hypotonic
b. isotonic
c. hypertonic
4. An artificial cell can be made with a short length of dialysis tubing filled with liquid and
clamped on each end. If the artificial cell is filled with 80% sucrose solution and then placed in a
beaker of 40% sucrose solution. What effect will the movement of water have on the size of this
cell? Draw diagrams to help answer the question.
a. no change
b. cell gets bigger
c. cell gets smaller
5. The solution in the artificial cell is _______________ to the inside of the cell.
a. hypotonic
b. hypertonic
c. isotonic
