Question

question 4 (2 points)
a cell with a total of 0.2 osmol/l is placed into a solution with a total of 0.3 osmol/l (switched from the previous question). it is assumed that the osmotic particles cannot pass through the cell membrane.
answer the following true or false questions.
1 solvent is more concentrated in the cell
2 water will osmose out of the cell 3 the cell will shrink and may look crenated
4 plant cells have a cell wall to protect them from dehydration caused by osmosis
a. true b. false

Explanation:

1. Question 1: Osmolarity of cell is 0.2 osmol/L, solution is 0.3 osmol/L. Solvent (water) concentration is inversely related to solute (osmotic particles) concentration. So cell has higher solvent concentration. So "Solvent is more concentrated in the cell" is true (A).
2. Question 2: Water moves from high solvent (low solute) to low solvent (high solute) concentration. Cell has higher solvent, so water osmos out. So "Water will osmose out of the cell" is true (A).
3. Question 3: When water leaves the cell (animal cell, assuming), it shrinks (crenation). So "The cell will shrink and may look crenated" is true (A).
4. Question 4: Plant cell walls provide structural support and can protect from dehydration - induced shrinkage (plasmolysis prevention to some extent). So "Plant cells have a cell wall to protect them from dehydration caused by osmosis" is true (A).

Answer:

1. A. true
2. A. true
3. A. true
4. A. true