Lab: Diffusion Across a Semi-permeable Membrane

Question 1

Did you read the Student Guide carefully?

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yes

Question 2

✔ CX Vmaterial used as the membrane

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C

Question 3

✔ CVamount of substances used

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C

Question 4

✔ CVnumber of trials

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C

Question 5

X C✔ Vwhether the molecules diffused through the membrane (tubing)

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V

Question 6

Now label the variables: Molecule size is the ✔ independentdependent variable. The ability of the

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independent

Question 7

material to diffuse is the independent✔ dependent variable.

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dependent

Question 8

Think about the lab procedure you just read. Label each factor below V if it was variable during the procedure or C if it was constant.X C✔ Vmolecule size (large starch molecules vs. small glucose molecules)

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V

Lab: Diffusion Across a Semi-permeable Membrane Answers

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