Five Dialysis Bags, Constructed from a Semipermeable Membrane That Is

question 54

Multiple Choice

Five dialysis bags, constructed from a semipermeable membrane that is impermeable to sucrose, were filled with various concentrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed) and the percent change in mass of each bag was graphed.

-Which line or lines in the graph represent(s) bags that contain a solution that is hypertonic at 50 minutes?

• A) A and B
• B) B
• C) C
• D) D
• E) D and E

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Definitions:

Standard Normal Distribution

The standard normal distribution is a statistical distribution where the mean is 0 and the standard deviation is 1, representing the distribution of z-scores from any normal distribution.

Between

Typically used in the context of comparing variables or conditions that are separate or distinct from one another.

Z-score

A statistical measure that quantifies the distance (in standard deviations) a data point is from the mean of a data set.

Standard Normal Distribution

A probability distribution with a mean of 0 and a standard deviation of 1.