AP BIOLOGY

LABORATORY REVIEW

DIFFUSION AND OSMOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following describes an appropriate water movement pathway?
A
hypotonic solution to hypertonic solution
B
hypertonic solution to hypotonic solution
C
hypertonic solution to isotonic solution
D
isotonic solution to hypotonic solution
Explanation: 

Detailed explanation-1: -A hypertonic solution has fewer water molecules than a hypotonic solution, which have more water molecules. In the presence of a partially permeable membrane, water molecules will therefore move from the hypotonic solution to a hypertonic solution due to the existing differences in the concentration gradient.

Detailed explanation-2: -If a cell is put into a hypertonic solution, water will leave the cell. A quick tip to remembering this is to visualize “hyper” kids who want to go play outside! In contrast, when a cell is put into a hypotonic solution, water will enter the cell.

Detailed explanation-3: -Osmosis can be defined as the spontaneous movement of solvent molecules through a semi-permeable membrane from a lower-concentration solution to a higher-concentration solution.

Detailed explanation-4: -In a hypertonic solution, the net movement of water will be out of the body and into the solution. A cell placed into a hypertonic solution will shrivel and die by a process known as plasmolysis.

There is 1 question to complete.