AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
You put a cell into a solution, the cell grows. Is the solution hypotonic or hypertonic to the cell?
A
hypertonic
B
hypotonic
C
isotonic
D
not enough information
Explanation: 

Detailed explanation-1: -If a cell is placed in a hypotonic solution, there will be a net flow of water into the cell, and the cell will gain volume. If the solute concentration outside the cell is lower than inside the cell, and the solutes cannot cross the membrane, then that solution is hypotonic to the cell.

Detailed explanation-2: -A hypotonic solution causes a cell to swell, whereas a hypertonic solution causes a cell to shrink.

Detailed explanation-3: -In hypotonic solutions, there is a net movement of water from the solution into the body. A cell placed into a hypotonic solution will swell and expand until it eventually burst through a process known as cytolysis.

Detailed explanation-4: -When a cell placed in hypertonic solution (has more solutes that cell), the cell will shrink because water moves out, firstly from the cytoplasm and then from the vacuole. This process is called as exosmosis which leads to the plasmolysis.

Detailed explanation-5: -Plant cells have a rigid cell wall which helps them to have a rigid structure. When the plant cell is placed in a hypotonic solution, the process of osmosis takes place. Which results in the movement of water from the hypotonic solution into the plant cell.

There is 1 question to complete.