A student performed an experiment with bags of dialysis tubing filled with distilled water to model the process of osmosis. Dialysis
tubing is a semi-permeable membrane that allows some materials to passively move through the tubing. The dialysis tubing bags
were massed on a balance and then placed in beakers with solutions of sucrose of various concentrations, ranging from OM to 10M
Sucrose
Select which question the experimental design is best addressing?

Taking into account the principle of osmosis, the question that best addresses experimental design is  How does the effect of environmental sucrose concentrations impact the  movement of water across a membrane?

Explanation:

Options for this question:

The experimental design of the student, made with dialysis bags and sucrose at different concentrations should recreate the principle of osmosis, of importance in living beings for organic homeostasis.

Osmosis consists of the movement of water - through a semi-permeable membrane - from a less concentrated solution to a higher concentration solution, following a gradient, to achieve balance.  

The student will observe in his experiment that water moves from the solution with less sucrose concentration to the higher concentration of sugar. Beakers with the highest concentration of sucrose will have the highest weight, due to the increase in liquid volume.

How does the effect of environmental sucrose concentrations impact the  movement of water across a membrane?

The experiment shows that:

With this experiment the principle of osmosis is confirmed, where the concentration of a solute determines the amount of water that passes through a semipermeable membrane -following a concentration gradient- until equilibrium is reached.

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