To obtain an isotonic media, sodium chloride content should be:
- A- 0.85 g %
- B- 0.085 g%
- C- 8.5 g%
- D- 6.5 g%
- E- 0.50g.
The correct answer for the sodium chloride content to obtain an isotonic media is: A - 0.85 g %
Here's why:
- An isotonic solution has the same concentration of solutes (particles dissolved in the solution) as the surrounding fluid it's in contact with. In the case of biological systems, this usually refers to the fluids inside cells.
- The most common reference point for isotonicity is human blood, which has a sodium chloride concentration of approximately 0.9%.
- Therefore, a solution with a sodium chloride concentration of 0.85 g% would be considered isotonic with blood.
Other Options:
Here's why the other options are incorrect:
B - 0.085 g%:
This concentration is much too low and would be considered hypotonic, meaning it has a lower concentration of solutes than blood. This could lead to cells swelling due to water flowing into them.
C - 8.5 g%:
This concentration is much too high and would be considered hypertonic, meaning it has a higher concentration of solutes than blood. This could lead to cells shrinking due to water flowing out of them.
D - 6.5 g%:
Similar to C, this concentration is too high and would be considered hypertonic.
E - 0.50 g%:
This concentration is also too low and would be considered hypotonic.
Therefore, remember that 0.85 g% is the sweet spot for achieving an isotonic solution with respect to human blood. However, it's important to note that the specific isotonic concentration may vary depending on the specific biological system or cell type being considered.
