Question

During dialysis

• A. only solvent molecules can diffuse
• B. solvent molecules, ions and colloidal particles can diffuse
• C. all kinds of particles can diffuse through the semipermeable membrane
• D. solvent molecules and ions can diffuse

Answer 1

Answer: (D)

solvent molecules and ions can diffuse

Answer 2

The correct answer is D:solvent molecules and ions can diffuse
Concentration of salt and urea are kept low.Hemodialysis is a process by which the waste and water is removed from the blood with the help of an external filter that is known as dialyzer.It consists of a semi permeable membrane.The concentration of the solutes like potassium, phosphorus and urea are high in the blood in comparison to the dialysis solution, where it is very low.There is also replacement of the dialysate that ensures the concentration of the undesired solutes.