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.
1The plasma is a/an ______solution to the solution in the red blood cell.
A. hypertonic B. isotonic C. hypotonic
2The diffusion of water(osmosis) into the cell is ______the diffusion of water(osmosis)out of the cell.
A. equalB. greater thanC. Less than
3. The turgor pressure of the RBC is ______zero.A. equalB. greater thanC. Less than
4The pressure on the inside of the cell is the______pressure on the outside.
A. equal toB. more thanC. 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.
5This red blood cell can now be described as being ______.
A. crenatedB. hemolyzedC. plasmolyzedD. turgid
6The % concentration of water in the cell was ______the % concentration of water in the salt solution.
A. equal toB. less thanC. more than
7Thus the net direction of osmosis was ______the red blood cell.
A. equal in and out ofB. intoC. out of
8The 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.
9This red blood cell can now be described as being ______.
A. crenatedB. hemolyzedC. plasmolyzedD. turgid
10The distilled water was ______relative to the cell.
A. hypertonic B. hypotonic C. isotonic
11The cell was ______relative to the distilled water.
A. hypertonic B. hypotonic C. isotonic
12The direction of net osmosis was ______the cell.
A. equal in and out ofB. intoC. 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. crenatedB. plasmolyzedC. flaccidD. turgid
2. The pressure on the cell walls in the lettuce is about ______the pressure on the outside of the cell walls.
A. equal toB. more thanC. less than
3. The turgor pressure of the lettuce cells is about ______zero.
A. equal toB. more thanC. Less than
4. A plant will start to sag when the cells are experiencing a(an) ______condition.
A. hypotonicB. isotonicC. 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. crenatedB. plasmolyzedC. flaccidD. turgid
6. The distilled water is ______to the cytoplasm of the lettuce cells.
A. hypotonicB. isotonicC. hypertonic
7. The direction of net osmosis was ______the lettuce cells.
A. out of B. intoC. 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. crenatedB. plasmolyzedC. flaccidD. turgid
10. The salt water is ______relative to the plant cell.
A. hypotonicB. isotonicC. hypertonic
11. The direction of net osmosis was ______the plant cell.
A. out of B. intoC. 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