1. What is a hydrogen bond and how does it help to explain many of the unique physical and chemical properties of water ?
2. Describe osmosis as a special case of diffusion. Distinguish between osmotic pressure and osmotic potential.
3. Understand the concept of water potential and how it is related to the chemical potential of water. In what way does the concept of water potential help the plant physiologist explain water movement ?
4. Explain why osmosis is, indirectly , an energy - dependent process in plant.
5. Show how one can use osmotic potential to determine molecular mass.
6. Can you suggest an important role for turgor in the plant?
7. Is is osmotic potential or turgor pressure that has the more significant role in regulating water potential of plant cells?
8. Estimate the values of cell, s and p for tissue that neither gains nor loses weight when equilibrated with a 0.4 molal mannitol solution and in which , when placed in a 0.6 molal mannitol solution, 50 percent of the cells are plasmolysis.
9. What is an aquaporin? What role do they play in cell membrane permeability to water?
10. What is an osmosensor? Describe how a two-component sensing/signaling system contributes to osmosesing.