Part A: Diffusion: Movement of Solutes across a Membrane
1. Summarize the results regarding the presence (+) or absence (-) of glucose and protein in the dialysis bag and beaker.
2. Explain the movement or lack of movement of protein and glucose across the dialysis bag membrane.
3. Which solution, that in the bag or that in the beaker, is hypotonic compared with the protein solution.
4. What factors affect the movement of molecules across a semipermeable membrane? Which factor plays the greatest role in biological systems.
5. Briefly explain what active transport is and how it differs from passive transport, especially in terms of concentration gradients.
Part B: Osmosis: Movement of Water across a MembraneQuestion
1. Define each term below in terms of solute concentration outside compared to the inside of the cell. You do not need to explain which direction water will move (3 pts).
a. Hypotonic -
b. Isotonic -
c. Hypertonic -