AP BIOLOGY

LABORATORY REVIEW

DIFFUSION AND OSMOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Plant cells are placed in a solution with a lower water potential than that of the cells.Which row is correct?
A
movement of water by osmosis = enters cellsvolume of vacuole = decreases
B
movement of water by osmosis = enters cells volume of vacuole = increases
C
movement of water by osmosis = leaves cellsvolume of vacuole = decreases
D
movement of water by osmosis = leaves cells volume of vacuole = increases
Explanation: 

Detailed explanation-1: -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-2: -In a solution with a lower water potential than the cell itself, animal cells will shrink.

Detailed explanation-3: -When a cell is placed in the hypotonic medium, water will enter into the cell due to endosmosis and turgor pressure of cell will increase.

Detailed explanation-4: -6. Will water move into or out of a plant cell if the cell has a higher water potential than the surrounding environment? Water will move out of a plant cell if it has a higher water potential (concentration) than the surrounding environment.

There is 1 question to complete.