What causes the cell dialysis tubing to lose or gain mass in this experiment?

What causes the cell dialysis tubing to lose or gain mass in this experiment?

Since the sucrose could enter leave the bag, in order to reach equilibrium, the water had to diffuse down its concentration out of the bag, causing the bag to loose weight. This concentration gradient caused water to diffuse into the dialysis tubes making the tubes gain weight.

What solution causes cells to shrink?

Hypertonic solutions
Hypertonic solutions have less water ( and more solute such as salt or sugar ) than a cell. Seawater is hypertonic. If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ).

What makes the dialysis bag increase in size?

What experimental evidence supports your answer? water and glucose, This is proven by the color change (starch test) and the increase in the size of the bag. Glucose left the bag and this is proven by a positive test on the surrounding water.

What happened to the dialysis tube is placed in hypotonic solutions explain why?

Hypotonic solution means the dissolved solute concentration will be more concerning the concentration of the solutes inside the dialysis bag. Thus, through the mechanism of osmosis, water will enter the dialysis tube, and the bag will swell up and result in the gain mass.

Why did the dialysis tube gain or lose weight?

Why did the dialysis bag gain weight? Since the sucrose could enter leave the bag, in order to reach equilibrium, the water had to diffuse down its concentration out of the bag, causing the bag to loose weight. This concentration gradient caused water to diffuse into the dialysis tubes making the tubes gain weight.

What would happen to the mass of each bag in this experiment if all the bags were placed in 0.4 M sucrose solution instead of distilled water?

Predict what would happens to the mass of each bag in this experiment if all the bags were placed in a 0.4M sucrose instead of distilled water. They would diffuse until they reached equilibrium, Since the bags were placed in distilled water, the water diffused into the bag making the mass increase.

Which solution causes shrinkage of cell and which is reversible?

Solutions that do not change the volume of a cell are said to be isotonic. A hypotonic solution causes a cell to swell, whereas a hypertonic solution causes a cell to shrink.

What causes a cell to shrink because of osmosis?

The net movement of water (osmosis) is in the direction of increased solute concentrations. A hypertonic solution has increased solute, and a net movement of water outside causing the cell to shrink.

Why did the dialysis bag lose weight?

Why are most cells small and why do they have cell membranes with many convolutions?

What is the explanation for the fact that most cells are small and have cell membranes with many convolutions? Small cells are better able to transport materials in and out of a cell more efficiently.

What do the dialysis tubes represent?

The dialysis tubing itself represents the cell membrane.

Is the solution in the bag hypertonic isotonic or hypotonic to the solution in the beaker?

Types of Solutions Based on Solute Concentration The solution in the bag is hypotonic (lower solute concentration) to the solution in the beaker. The solution in the beaker is hypertonic (higher solute concentration) to the one in the bag. Water will move from the hypotonic solution into the hypertonic solution.

Is the dialysis tubing a model for a cell?

Log in here. The dialysis tubing in this experiment is a model for a cell. Like cells, it is filled mostly with water with some other things dissolved in it (this represents the cytoplasm), and is surrounded by a semipermeable membrane which simulates the cell membrane.

Why does the mass of a dialysis bag change?

The mass of the dialysis bags changed because of osmosis, water moves from regions or low solute concentration to regions of high solute concentration. It depends on the solution the solutions you use that have more or less water in the bags. It depends on the water potential inside and outside the bag.

Why is there less water in dialysis tubing?

Like cells, it is filled mostly with water with some other things dissolved in it (this represents the cytoplasm), and is surrounded by a semipermeable membrane which simulates the cell membrane. Because there are substances dissolved in the water inside the tubing, there is less water (by percent) in the tube than in its surroundings]

Why is starch not permeable to dialysis tubing?

From the results of this experiment, it is obvious that glucose and iodine (potassium iodide) has smaller molecular size than starch. Because starch had larger molecular size, the dialysis tubing was not permeable to it (it didn’t allow it to readily pass through the pores of its membrane).