Question

question 3 (2 points)
a cell with a total of 0.3 osmol/l is placed into a solution with a total of 0.2 osmol/l.
it is assumed that the osmotic particles cannot pass through the cell membrane.
answer the following true or false questions.
1 osmosis of water molecules will go into the cell
2 the cell will swell and possibly lyse
3 plant cells are not protected against lysis by their cell walls
a. true b. false

Explanation:

Step1: Analyze Osmosis Direction

Osmosis is the movement of water from low solute (high water) to high solute (low water) concentration. The cell has 0.3 osmol/L (higher solute), solution has 0.2 osmol/L (lower solute). So water moves into the cell. So statement 1 is true (A).

Step2: Analyze Cell Swelling/Lysis

Since water enters the cell (hypotonic solution for the cell), the cell will gain water, swell, and if animal cell, may lyse. So statement 2 is true (A).

Step3: Analyze Plant Cell Wall Protection

Plant cell walls are rigid and protect against lysis (prevent excessive swelling/rupture). So "Plant cells are NOT protected..." is false (B).

Answer:

1. A. true
2. A. true
3. B. false