Lecture Notes for BIOS 201 - INTRODUCTORY BIOLOGY at Rice (Rice)

Notes Information

Material Type:Class Note
University:Rice University
Term:Fall 2008
  • Microtubule
  • Motor Proteins
  • Neurotransmitters
  • Immediately
  • Cytoskeleton
  • Polypeptides
  • Golgi Apparatus
  • Specialized
  • Orientation
  • Plasma Membrane
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Lauren Schoeffler BIOS 201 Discussion Group 12 15 September 2008 TOPIC 2: Nerve cells can often be extremely long. Secretory vesicles bud off from the trans face of the Golgi apparatus near the single nucleus of the nerve cell and then can travel up to a meter in some cells before fusing with the plasma membrane. Describe the cytoskeleton-based mechanisms responsible for this movement of vesicles within nerve cells and the energy source for such movements. Can you think of any creatures that might target vesicle trafficking to the plasma membrane in attacking their prey? From the rough endoplasmic reticulum vesicles carrying polypeptides move towards the cis face of the Golgi apparatus where they fuse with the Golgi's membrane and empty their contents into the lumen. Once in the Golgi apparatus, the polypeptides are sorted through the complex of cisternae to the trans face of the Golgi and finally to the trans face network of the Golgi. At the trans face network, the proteins de...

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