Possible Essay Questions

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Possible Essay Questions:

  1. Explain how the same chemical signal can lead to totally different responses in different cell types.

  2. Describe how guard cells regulate the flow of CO2 and water into and out of leaves.

  3. Describe the ABC hypothesis of developmental flower formation.

  4. Explain the differences and similarities between active and facilitated transport across membranes.

  5. Explain how phloem is able to transport sucrose to where it is needed in a plant.

  6. Explain how pumping hydrogen ions out of root hair cells permits the uptake of nutrients from the soil.

  7. Explain the major events of angiosperm fertilization.

  8. Explain how a kinase cascade can change the internal environment of a plant cell.

  9. Explain experiments on plant photoperiodism that implicate phytochrome as the light sensor that triggers the long day/short day response.

  10. Discuss defining characteristics of each and differences among all three types of plant cells: Parenchyma, Collenchyma, Sclerenchyma

  11. Discuss differences among apoplast, symplast, and transmembrane transport. Where do you use each type?

  12. Discuss the effects of Apical Dominance.

  13. Major differences between monocot and dicots. Include roots, stems, leaf structure etc.

  14. Discuss the effects of different hormones: auxin, cytokinins, gibberellins, abscisic acid, ethylene.

  15. Describe how the water travels into the root of a plant. (apoplast, symplast etc)

  16. Discuss water potential. What is it? Give an example problem.

  17. Describe G-protein-linked receptors. How do they work, where are they found?

  18. Describe ion-gated receptors. How do they work, where are they found?

  19. Describe tyrosine-kinase receptors. How do they work, where are they found?

  20. What is signal transduction? What are primary messenger? Secondary messengers?

  21. What is post-translation modification? What details does this reveal about enzymes that are modified? Give examples.

  22. What are incomplete flowers? What is the difference between monoecious and dioecious plants?

  23. Describe the mechanisms of xylem cells in water transport. Include transpiration, root pressure, water potential, etc.

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