Spring.wmf (18300 bytes) Plant Physiology (Biology 327)  - Dr. Stephen G. Saupe;  College of St. Benedict/ St. John's University;  Biology Department; Collegeville, MN  56321; (320) 363 - 2782; (320) 363 - 3202, fax;    ssaupe@csbsju.edu

Exam Questions:  Cell Unit 

  1. Describe the structure and function of the organelles found in "typical" plant and animal cells (including, but not necessarily limited to,  nucleus, ribosome, ER (rough and smooth), mitochondrion, golgi apparatus, microtubules, microfilament, intermediate filaments, oleosomes, microbodies, glyoxysomes, spherosomes, peroxisomes.

  2. Describe the composition, structure and role of cell membranes.

  3. Discuss the structure and function of the various types of plastids. Discuss the origin of plastids from an ontogenetic (cytoplasmic inheritance) and from a phylogenetic perspective (endosymbiont hypothesis).

  4. Discuss the structure and roles (function) of the large central vacuole found in plant cells. Explain why animal cells lack these structures.

  5. Discuss the morphology (structure), chemical composition and role of the plant cell wall.

  6. Discuss the mechanism of formation of the plant cell wall (be sure to include origin of wall components, sequence of development).

  7. Describe the cell wall - cell growth paradox. Then, explain how this problem is solved. In other words, explain how plant cells grow (include cellulose microfibril orientation, wall loosening, role of protons and IAA)

  8. Describe the structure and function of plasmodesmata.  Include a discussion of intercellular spaces.

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Last updated:  01/07/2009     � Copyright  by SG Saupe