12 Questions
What is the primary function of the semipermeable membrane in osmosis?
To permit the passage of solvent molecules only
What is the consequence of suspending red blood cells in a hypertonic solution?
The cells will shrink and become wrinkled
What is the term used to describe the process of red blood cells bursting in a hypotonic solution?
Hemolysis
What is the characteristic of an isotonic solution?
It has the same osmotic pressure as the physiologic fluid
What happens when blood is mixed with a hypotonic solution?
Water enters the blood cells
What is the percentage of NaCl in a solution that is isotonic with blood?
0.9%
Why is a 2.0% solution of boric acid considered iso-osmotic with blood?
Because the solution has the same osmotic pressure as the blood cell contents when determined by the freezing point method
What happens when a 2.0% solution of boric acid comes into contact with red blood cells?
The solution causes hemolysis of red blood cells
Why is a 0.8% solution of urea not considered isotonic with blood?
Because the solution causes hemolysis of red blood cells
What is a characteristic of a true semipermeable membrane?
It is impermeable to the solute molecules and permeable to the solvent, water
Why does the mucous lining of the eye act as a true semipermeable membrane to boric acid in solution?
Because it is impermeable to the solute molecules and permeable to the solvent, water
Why is the red blood cell membrane not a perfect semipermeable membrane?
Because it allows the passage of solute molecules
This quiz covers the concept of osmosis, isotonic solutions, and their relation to semipermeable membranes. It also explores the effects of mixing blood with sodium chloride solutions of varying tonicity.
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