Endocytosis

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    • #3711
      ntpt
      Participant

      Does the formation of vesicles by endocytosis reduce the size of the plasma membrane?

    • #41319
      army
      Participant

      I suppose yes, a bit.
      But then it will be normal again after exocytosis. 😳

    • #41367
      Poison
      Participant

      Yes. That’s right generally.

    • #41600

      do not the vesicles return inside the cell at some point? so they can pick up more enzyme to dump outside

    • #41628
      MrMistery
      Participant

      Vesicles are not recycled, i’m afraid. But the endoplasmic reticulum formes membrane lipids and proteins constantly. Interesting to know, the enzymes it formes are only put on the outer membrane, so without flipases the membranes would lose it’s integrity. This as a counter argument for the people who say "flip-flop is rare so we don’t have to learn about it"
      Regards,
      Andrew

    • #41829
      th1_rhs13
      Participant

      Discuss this flip-flip notion further. Im not aware of any such attribute or activity. To my knowledge Actin and intermediate filaments are what gave cells their structure.

    • #41850
      MrMistery
      Participant

      where they are 2 totally different things. The cytoskeleton gives the shape it’s shape and contributes to mobility.
      Flip-flop is the movement of lipids from one side of the bilayer to the other. It requires ATP and it is catalysed by enzymes known as flipases or phospholipid translocases. It occurs about once a month – very rare. i’m sorry i have no time to explain it further.

    • #42679
      tommiekiddy
      Participant

      it is a process in which a substance gains entry into a cell without passing through the cell membrane

    • #93439
      slindsey
      Participant

      I didnt realize so much went on with the endoplasmic reticullum during endocytosis. 🙄

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