Dialysis Tubing Is a Selectively Permeable Membrane That Can Be

question 14

Multiple Choice

Dialysis tubing is a selectively permeable membrane that can be filled with a solution to simulate a cell.A piece of dialysis tubing has been filled with a cloudy white solution of 5 percent starch,5 percent egg albumin (protein) ,and 5 percent glucose (a small sugar) dissolved in water to simulate a cell.This simulated cell is weighed and then placed in a beaker of water.After soaking in the water for one hour,the simulated cell is once again weighed. Over time,the weight of the simulated cell can be expected to

• A) decrease because it is hypotonic to the beaker environment and water will enter the simulated cell through osmosis.
• B) decrease because it is hypertonic to the beaker environment and water will leave the simulated cell through osmosis.
• C) increase because the solution in the beaker is hypotonic to the simulated cell and water will enter the simulated cell through osmosis.
• D) remain constant because it is isotonic to the beaker environment and water will be drawn into the simulated cell because of the albumin.

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