AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cells cytoplasm. The cell membrane is selectively permeable, allowing water but not the solute to pass through. What will happen to the cell?
A
No change
B
The cell will shrivel because of osmosis
C
The cell will swell because of osmosis
D
The cell will shrivel because of active transport
Explanation: 

Detailed explanation-1: -A isotonic solution would indicate a solution with equal solute concentration compared to the solution on the other side of the membrane.

Detailed explanation-2: -A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane.

Detailed explanation-3: -The presence of the plant cell wall prevents plant cells from bursting. Plant cells placed in a solution with a low water concentration compared to their contents (concentrated sugar solution) will lose water by osmosis. Their cell membranes will peel away from their cell walls and they are said to be plasmolysed .

Detailed explanation-4: -A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable, allowing water but not the solutes to pass through. What will happen to the cell? The cell will swell because of osmosis.

There is 1 question to complete.