THE CELL
TRANSPORT INTO AND OUT OF THE CELL
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The cells were placed in a hypotonic solution.
|
|
|
The cells were placed in a hypertonic solution.
|
|
|
The cells were placed in an isotonic solution.
|
Detailed explanation-1: -A red blood cell will swell and undergo hemolysis (burst) when placed in a hypotonic solution. When placed in a hypertonic solution, a red blood cell will lose water and undergo crenation (shrivel).
Detailed explanation-2: -If a red blood cell is placed in water, water enters the cell by osmosis. Because the membrane is quite weak the cell will burst as the volume and therefore the pressure in the cellincreases. Red blood cells shrink whenplaced in concentrated solutions of sugar as water moves out of them by osmosis.
Detailed explanation-3: -The red blood cell would shrink as it loses water to the salt solution in the test tube.
Detailed explanation-4: -But a 10% salt solution is hypertonic to the cell cytoplasm, so the water will move out of the cell due to osmosis. This will result in shrinkage of the red blood cells resulting in collapse of the cell.
Detailed explanation-5: -If the blood cells were put in a hypotonic solution they would swell and burst since the concentration of solute is higher inside the cell, and the water outside the cell will tend to diffuse into the cell rendering a gain in its volume which can damage its lining and eventually caused its burst.