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Lesson 8.3 Passive Transport and Gummy Bear Review

Last updated almost 5 years ago

10 questions

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Question 1

1.

Which way would the blue molecules in the diagram at the right move if they are able to diffuse freely across the membrane? Into or out of the cell?

Question 2

2.

If a cell is placed in a solution where there is a high concentration of salt (solutes), will water move INTO the cell, or OUT OF the cell?

Question 3

3.

What type of solution is the solution in #2? (Hypertonic, Hypotonic, or Isotonic?)

Question 4

4.

If a cell is placed in a solution where there is a low concentration of solutes (for example, distilled water with nothing dissolved in it), will water move INTO the cell, or OUT OF the cell?

Question 5

5.

What type of solution is the solution in #4? (Hypertonic, Hypotonic, or Isotonic?)

Question 6

6.

Diffusion and osmosis are both types of passive transport. Does passive transport involve energy use by the cell to complete?

Question 7

7.

Why is osmosis considered to be facilitated diffusion?

Go back to your Gummy Bear Investigation.  Use your data, and your notes to help you answer the following questions.

Question 8

8.

Imagine that your Gummy Bear represents a cell. Would the inside of the gummy bear represent intracellular fluid, or extracellular fluid? Explain

Question 9

9.

Would the distilled water surrounding your gummy bear represent intracellular fluid, or extracellular fluid? Explain.

Question 10

10.

Look back at your responses for Questions #4 and #5, explain what happened to your gummy bear when placed in distilled water. (Some terms that may apply that you can use in your explanation: intracellular, extracellular, hypertonic, hypotonic, isotonic, osmosis, diffusion, concentration, solute)