AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A solution with the same concentration of water and solutes as inside a cell, resulting in the cell retaining its normal shape
A
passive transport
B
isotonic solution
C
hypotonic solution
D
hypertonic solution
Explanation: 

Detailed explanation-1: -Solutions that contain the same concentration of water and solutes as the cell cytoplasm are called isotonic solutions. Cells placed in an isotonic solution will neither shrink nor swell since there is no net gain or loss of water.

Detailed explanation-2: -If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.

Detailed explanation-3: -The overall process is known as plasmolysis. An isotonic solution has the same solute concentration compared to the intracellular solute concentration. When a red blood cell is placed in an isotonic solution, there will be no net movement of water.

Detailed explanation-4: -Hypotonic has a lower concentration of fluid, sugars and salt than blood. Hypertonic has a higher concentration of fluid, sugars and salt than blood. Isotonic has similar concentration of fluid, sugars and salt to blood.

Detailed explanation-5: -An isotonic solution is one with a salt concentration that is exactly equal to that of blood cells. If the surrounding solution has the same salt concentration as the solution inside the cell, the surrounding solution is referred to as isotonic.

There is 1 question to complete.