Select the diagram that represents the shape of a red blood cell when placed in each of the following solutions:
0.9 % (m/v) NaCl
Unfortunately, as a text-based AI model, I am unable to visually represent diagrams. However, when a red blood cell is placed in a 0.9% (m/v) NaCl solution, it will undergo a process called crenation, where the cell shrinks and takes on a wrinkled appearance.
To identify the shape of a red blood cell when placed in a 0.9% (m/v) NaCl solution, we need to understand the concept of osmosis. Osmosis is the movement of solvent molecules from an area of low solute concentration to an area of high solute concentration, through a semi-permeable membrane.
In this case, the NaCl solution is considered hypertonic compared to the cytoplasm inside the red blood cell. When a red blood cell is placed in a hypertonic solution, water molecules tend to move out of the cell towards the surrounding solution, causing the cell to shrink or crenate.
Therefore, the diagram that represents the shape of a red blood cell when placed in a 0.9% (m/v) NaCl solution is a shrunken or crenated red blood cell.
To select the diagram representing the shape of a red blood cell when placed in a 0.9% (m/v) NaCl solution, you would need to understand the concept of osmosis and how it affects the shape of red blood cells.
When a red blood cell is placed in a hypotonic solution, where the solute concentration is lower outside the cell than inside, water molecules move into the cell through its semi-permeable membrane. This influx of water causes the cell to swell and potentially burst, a process known as hemolysis.
On the other hand, when a red blood cell is placed in a hypertonic solution, where the solute concentration is higher outside the cell than inside, water molecules move out of the cell through its membrane. This loss of water causes the cell to shrink and shrivel, a process called crenation.
In the case of a 0.9% (m/v) NaCl solution, which is isotonic or roughly equal in solute concentration to red blood cells, there would be no net movement of water in or out of the cells. As a result, the red blood cells maintain their normal shape, which is typically round and biconcave.
To select the appropriate diagram, you would need to look for a representation of a red blood cell in its normal shape, resembling a round, biconcave disc. This would indicate that the 0.9% (m/v) NaCl solution is maintaining the shape of the red blood cell.
It's important to note that the specific diagram selection may vary depending on the source or format of the images provided.