Download Membrane Tutorial

Animal Cell Membrane Tutorial
The following image shows a normal functioning red blood cell as it would appear when in plasma. Select
the correct answers to the following questions.
1
The plasma is a/an ____________ solution to the solution in the red blood cell.
A. hypertonic
B. isotonic
C. hypotonic
2
The diffusion of water(osmosis) into the cell is ___________ the diffusion of water(osmosis)out of the
cell.
A. equal
B. greater than
C. Less than
3. The turgor pressure of the RBC is ____________zero.
Less than
4
A. equal
B. greater than
C.
The pressure on the inside of the cell is the_____________ pressure on the outside.
A. equal to
B. more than
C. Less than
Below are images showing what happens to a normal red blood cell when placed in a 1.3% salt
solution. Select the correct answers to the following questions.
5
This red blood cell can now be described as being ____________.
A. crenated
B. hemolyzed
C. plasmolyzed
D. turgid
6
The % concentration of water in the cell was ____________ the % concentration of water in the salt
solution.
A. equal to
B. less than
C. more than
7
Thus the net direction of osmosis was ____________ the red blood cell.
A. equal in and out of
B. into
C. out of
8
The salt solution was ____________ relative to the red blood cell.
A. hypertonic
B. hypotonic
C. isotonic
Below are images showing what happens to a normal red blood cell when in distilled water. Select the
correct answers to the following questions.
9
This red blood cell can now be described as being ____________.
A. crenated
B. hemolyzed
C. plasmolyzed
D. turgid
10 The distilled water was ______________ relative to the cell.
A. hypertonic
B. hypotonic
C. isotonic
11 The cell was _____________ relative to the distilled water.
A. hypertonic
B. hypotonic
C. isotonic
12 The direction of net osmosis was _____________ the cell.
A. equal in and out of
B. into
C. out of
Plant Cell Wall Osmosis
The following image shows some lettuce taken from the refrigerator. The leaf feels like a plant that needs
water. Answer the following questions about this photo.
1. The leaf in this condition is described as being _______________
A. crenated
B. plasmolyzed
C. flaccid
D. turgid
2. The pressure on the cell walls in the lettuce is about __________ the pressure on the outside of the cell walls.
A. equal to
B. more than
C. less than
3. The turgor pressure of the lettuce cells is about ___________ zero.
A. equal to
B. more than
C. Less than
4. A plant will start to sag when the cells are experiencing a(an) ____________ condition.
A. hypotonic
B. isotonic
C. hypertonic
The lettuce from the previous page is now put in distilled water. The image to the right is a microscopic
photo of cells in distilled water. Answer the following questions about these photos.
5. The lettuce in the distilled water is now crisp the lettuce cells are called _______________.
A. crenated
B. plasmolyzed
C. flaccid
D. turgid
6. The distilled water is ____________ to the cytoplasm of the lettuce cells.
A. hypotonic
B. isotonic
C. hypertonic
7. The direction of net osmosis was _____________ the lettuce cells.
A. out of
B. into
C. equal into and out of
8. The pressure (Tugor) on the inside of the cell is ____________ than the pressure on the outside now the
plant stands tall.
A. equal to
B. less than
C. more than
The lettuce from page 1 is left in 5% salt water (salad dressing) for a half hour, it now feels mushy. The
image to the right is a microscopic photo of cells in salt water. Answer the following questions about these
photos.
9. The plant cells when left in salt water become ______________ (this often causes a cell to die).
A. crenated
B. plasmolyzed
C. flaccid
D. turgid
10. The salt water is ____________ relative to the plant cell.
A. hypotonic
B. isotonic
C. hypertonic
11. The direction of net osmosis was _____________ the plant cell.
A. out of
B. into
C. equal into and out of
12. The cell membrane has pulled away from the plant cell wall because the pressure inside the cell is
__________ the pressure outside the cell. A. equal to
B. less than
C. more than