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Thinking Scientifically
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  1. Vesicles that leave the Golgi apparatus move to different locations including the plasma membrane and the cytoplasm as lysosomes. What type of system could direct each budding vesicle to its proper location? What role could be played by the cytoskeleton?
  2. In a cell biology laboratory students are examining sections of plant cells. Some students report seeing the nucleus, others do not. Some students see a large vacuole, others see a small vacuole. Some see evidence of an extensive endoplasmic reticulum, others see almost none. How can these observations be explained if the students are looking at the same cells?

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