Golgi Apparatus

• Where does the Golgi occur?


  In almost all eukaryotic cells.
• What does the Golgi consist of?

  A stack of membranes that make up flattened sacs called cisternae, and small rounded hollow structures called vesicles.
• What is passed through the Golgi in strict sequence?

  Proteins and lipids produced by the ER.
• What does the Golgi do to the proteins from the ER?

  Modifies them, often adding non-protein components, such as carbohydrates, and also 'labels' them to be sorted and sent to their correct destinations.
• What happens to the modified proteins and lipids once sorted?

  They are transported in the Golgi vesicles which are pinched off from the ends of the cisternae.
• What may the vesicles do?

  Move to the cell surface, where they fuse with the membrane and release their contents to the outside.
• What are the functions of the Golgi?

  Add carbohydrates to proteins to make glycoproteins, produce secretory enzymes, secrete carbohydrates, transport modify and store lipids, and form lysosomes.
• Where is the Golgi well developed?

  In secretory cells such as epithelial cells.