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y the end of this lab, you will see how some materials diffuse through a semipermeable membrane but others do not. The materials that you examine will differ in molecule size. Some will be larger and some smaller. Formulate an investigative question for this situation.

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Sample Question: What is the effect of molecule size on a molecule's ability to diffuse across a semipermeable membrane?

-format: “What is the effect of X on Y?”

-independent variable: molecule size

-dependent variable: the ability to diffuse across a semipermeable membrane

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Answer:

What is the effect of molecule size on a molecule's ability to diffuse across a semipermeable membrane?

Explanation:

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