Endocytosis and Exocytosis
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Questions and Answers

What is the process of internalising various liquids and small particles known as?

  • Exocytosis
  • Endocytosis
  • Phagocytosis
  • Pinocytosis (correct)
  • Which process involves the formation of large vesicles called phagosomes?

  • Phagocytosis (correct)
  • Endocytosis
  • Pinocytosis
  • Exocytosis
  • What type of cells ingest large particles by phagocytosis?

  • Only animal cells
  • Only specialised phagocytic cells (correct)
  • All cells
  • Only plant cells
  • What is the process that is the reverse of endocytosis?

    <p>Exocytosis</p> Signup and view all the answers

    Which process involves molecules being packaged into membrane-bound vesicles?

    <p>Exocytosis</p> Signup and view all the answers

    What do endosomes refer to in the context of cellular processes?

    <p>Intracellular vesicles formed during pinocytosis</p> Signup and view all the answers

    Which process involves membrane protrusions surrounding large particles?

    <p>Phagocytosis</p> Signup and view all the answers

    'Cell drinking' is another term used to describe which cellular process?

    <p>Pinocytosis</p> Signup and view all the answers

    'Cell eating' is a term associated with which cellular process?

    <p>Phagocytosis</p> Signup and view all the answers

    Which type of cells ingest large particles by forming large vesicles called phagosomes?

    <p>All specialised phagocytic cells</p> Signup and view all the answers

    What is the main characteristic of clathrin-mediated endocytosis?

    <p>Involves the formation of a complex of proteins</p> Signup and view all the answers

    What is the function of adaptor proteins in clathrin-mediated endocytosis?

    <p>Bind the clathrin coat to cargo receptor cytoplasmic sites</p> Signup and view all the answers

    What is the role of Dynamin in clathrin-mediated endocytosis?

    <p>Causes vesicle release by forming a ring around the neck</p> Signup and view all the answers

    What is the fate of clathrin triskelions and adaptors after vesicle release?

    <p>They are recycled back to the membrane</p> Signup and view all the answers

    Which protein forms the curvature of coated pits during clathrin-mediated endocytosis?

    <p>Clathrin triskelions</p> Signup and view all the answers

    What initiates the formation of coated vesicles in clathrin-mediated endocytosis?

    <p>Activation of PIP2 via DAG</p> Signup and view all the answers

    How do adaptor proteins interact with cargo receptors in clathrin-mediated endocytosis?

    <p>Recognize amino acid sequences on membrane receptors</p> Signup and view all the answers

    What is the structural arrangement of a molecule of clathrin referred to as?

    <p>Triskelion</p> Signup and view all the answers

    What is the function of Dynamin in clathrin-mediated endocytosis?

    <p>Causes vesicle release by pinching off the neck</p> Signup and view all the answers

    What triggers the deepening of coated pits during clathrin-mediated endocytosis?

    <p>Extracellular fluid encapsulation by membranes</p> Signup and view all the answers

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