Pre-Lab Report SheetLab Section: .

Transporting Across Boundaries Exercise

Name:.

Use the diagrams below to determine the concentration gradients and expected direction of net flow for all the different molecules in each set-up.Determine the concentration gradient for each molecule type.Then draw an arrow showing the “expected” net movement of each molecule in the set-up.In each of these examples NaCl is permeable, while sucrose is impermeable to the membrane.

AB C

• Describe the net movements of the molecules in Condition A above.
• Describe the net movement of the molecules in Condition B above.
• Describe the net movement of the molecules in Condition C above.
• 1. Describe the net movements of the molecules in Condition A above.
  
  
  
  
  
  
  
  
  
  
  2. Describe the net movement of the molecules in Condition B above.
  
  
  
  
  
  
  
  
  
  
  3. Describe the net movement of the molecules in Condition C above.
  
  
  
  
  
  
  
  
  
  
  4. Write out a hypothesis for each demonstration performed in this exercise on pages 72 and 73.
  Make sure your hypothesis is in the correct format!
  
• Write out a hypothesis for each demonstration performed in this exercise on pages 72 and 73.

Make sure your hypothesis is in the correct format!

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