bulk transport

• what is bulk transport

  the transport of very large molecules in and out of the cell
• what are the two ways of of executing bulk transport

  endocytosis and exocytosis
• what is exocytosis


  the process by which substances will leave the cell by being transported through the cytoplasm in a vesicle which fuses to the cell membrane
• where is the vesicles produced in the cytoplasm

  by budding off the end of the Golgi body
• what happens in exocytosis after the substance has fused with the cell membrane


  it will release the contents out of the cell
• what is endocytosis


  process by which the cell takes in materials that are too large to pass through the cell membrane
• what is the first stage of endocytosis

  the plasma membrane surrounds particles outside the cell
• what happened after the plasma membrane surrounds of particles outside the cell in endocytosis


  the folding will close of the link to the outside and the cotnentswill be trapped in the cell
• what are the two types of endocytosis

  phagocytosis and pinocytosis
• what is phagocytosis give an example

  the uptake of solids for example when white blood cells engulf bacteria
• What is pinocytosis? give an example

  the uptake of liquids , lipid droplets
• what are the properties of substances transported by endocytosis

  large particles such as macromolecules
• give examples of large particles transported by endocytosis

  proteins
• what are examples of substances transported by exocytosis

  enzymes and hormones
• what are the properties of substances transported by exocytosis

  large polar proteins