Question

1. What is simulated by the placing the dialysis tubing in rice?

Answer 1

Ans.

• The dialysis membrane represents a technique of separation and is of a semi-permiable nature.
• It helps in the demonstration of processes of osmosis, diffusion and movement of molecules across a selective membrane.
• Selective permiability is that characteristic of a cell membrane which determines which molecule can move across the pores of membrane.
• Molecules of different sizes present in a solution can be seperated by this membrane.
• Some molecules can readily pass through this membrane whereas some of the molecules may be excluded.
• This tubing is formed of cellulose fiber and is given the shape of a flat tube.
• In the given scenerio, the dialysis tubing in rice stimulate kidney filtration through the ureter.
• This step of filtration helps in the transportation of urine towards the urinary bladder.