Dialysis tubing is often used in biological experiments to simulate the function of cell membranes. Specifically, the dialysis tubing represents a selectively permeable membrane, which is a crucial component of living cells.
The function of this part is to regulate what enters and exits the cell. Similarly, just like a real cell membrane, the dialysis tubing allows certain small molecules (like water, salts, and small solutes) to pass through while restricting larger molecules (like proteins) from crossing. This characteristic is essential for maintaining the cell’s internal environment and ensuring that necessary nutrients can enter while waste products can be removed.