Lab: Diffusion Across a Semi-permeable Membrane

Question 1

contains .

Revolt · Accepted Answer

only Lugol’s solution

Question 2

Initially, glucose was found only the dialysis tubing. After 15 minutes, a sample was taken. That sample showed that glucose was found

Revolt · Accepted Answer

inside; Selection 1: inside

Question 3

the dialysis tubing.

Revolt · Accepted Answer

both inside and outside

Question 4

Analysis: diffused though the semipermeable membrane.

Revolt · Accepted Answer

Only glucose (smaller molecules)

Question 5

Conclusion: Starch has a larger molecule size than glucose. So you can conclude that larger molecules are likely than smaller molecules to diffuse across a semipermeable membrane.

Revolt · Accepted Answer

less

Question 6

Based on what you learned in the lab, why does your body need to break down starch into glucose?

Revolt · Accepted Answer

Starch molecules are too large to diffuse into cells.

Lab: Diffusion Across a Semi-permeable Membrane Answers

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