If a drug that inhibited transport from the trans face of the Golgi was applied to plant cells, which stage of the cell cycle would be directly affected?

Question

A.  G2
B.  S
C.  Metaphase
D.  Anaphase
E.  Cytokinesis

Clarify Question
  · What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?

Gather Content
  · What do you know about the role of the Golgi in mitosis in plants? How does it relate to the question?
  Consider Possibilities  
  · What other information is related to the question? Which information is most useful?

  Choose Answer
  · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?

  Reflect on Process
  · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Answer 1

E.  Cytokinesis

Clarify Question
  · What is the key concept addressed by the question?
        o The question asks about the role of the Golgi in a step in mitosis.
· What type of thinking is required?
        o You are being asked to apply your knowledge of mitosis in a plant to explain the role of the Golgi.
· What key words does the question contain and what do they mean?
        o A drug that inhibited transport from the trans face of the Golgi – this means that products of the Golgi could not be released.

Gather Content
  · What do you know about the role of the Golgi in mitosis in plants? How does it relate to the question?
        o In plants, the cell plate forms from the fusion of Golgi-derived vesicles.  .
  Consider Possibilities  
  · What other information is related to the question? Which information is most useful?
        o S is where DNA synthesis occurs, and does not involve the Golgi.
        o Metaphase and anaphase involve the movement of chromosomes and do not require the Golgi.
        o G2 is a stage of the cell cycle that involves making components for the dividing cells.  The Golgi could be involved in this process, but would have less of a role in plants than the formation of the cell plate.

  Choose Answer
  · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
        o The drug will prevent the building blocks of the cell plate from being released from the Golgi.  As a result cytokinesis is the most likely process to be affected directly by this drug.

  Reflect on Process
  · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
        o This question asked you to apply your understanding of the role of the Golgi in mitosis in plants. If you got the correct answer, great job! If you got an incorrect answer, where did the process break down? Did you recall that the cell plate in plant cells arises from the Golgi?  Did you think that anaphase and metaphase require the Golgi?  Did you think that with the Golgi functioning the cell would arrest in G2?