WK 2: Exocytosis & Endocytosis
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Questions and Answers

Which process uses energy and ATP to move substances out of the cell?

  • Phagocytosis
  • Pinocytosis
  • Exocytosis (correct)
  • Endocytosis

    • What is the primary function of the Golgi apparatus in protein synthesis?

  • Folding of proteins
  • Glycosylation of proteins
  • Protein sorting and modification (correct)
  • Translation of mRNA

    • What type of endocytosis involves the engulfment of large molecules?

  • Pinocytosis
  • Glycosylation
  • Receptor-mediated endocytosis
  • Phagocytosis (correct)

    • What is the fate of proteins translated on ribosomes dependent on?

    <p>Their function</p> Signup and view all the answers

    What is the purpose of receptor-mediated endocytosis?

    <p>To internalize specific molecules into the cell</p> Signup and view all the answers

    What is the site of protein synthesis and folding in a cell?

    <p>Endoplasmic reticulum</p> Signup and view all the answers

    What is the purpose of exocytosis?

    <p>To move substances out of the cell</p> Signup and view all the answers

    What is the name of the process by which proteins are added to the cell membrane?

    <p>Protein insertion</p> Signup and view all the answers

    What happens to the proteins in the Golgi apparatus?

    <p>They undergo further modification and sorting</p> Signup and view all the answers

    Which process involves the movement of substances out of the cell, using energy from ATP?

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

    What type of endocytosis involves the ingestion of large molecules and particles?

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

    What is the term for the fusion of vesicles with the plasma membrane, resulting in the release of their contents?

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

    Which type of cell is responsible for secreting insulin?

    <p>Beta-cells of the pancreas</p> Signup and view all the answers

    What is the term for the uptake of small molecules and fluid from the environment?

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

    Which toxins inhibit exocytosis?

    <p>Botulinum and tetanus toxins</p> Signup and view all the answers

    What is the term for the process by which cells take in molecules from the environment?

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

    Which type of cell is responsible for secreting histamine?

    <p>Mast cells</p> Signup and view all the answers

    What is the term for the targeting of vesicles to specific areas of the cell membrane?

    <p>Active zones</p> Signup and view all the answers

    What is the purpose of the low pH in early endosomes?

    <p>To promote the dissociation of the substrate from the receptor</p> Signup and view all the answers

    Which type of endocytosis involves the uptake of specific molecules?

    <p>Receptor-mediated endocytosis</p> Signup and view all the answers

    What is the result of genetic disorders that stop the uptake of LDL particles by endocytosis?

    <p>Atherosclerotic plaques</p> Signup and view all the answers

    What is the purpose of proton pumps in the membrane surface of early endosomes?

    <p>To create a low pH environment</p> Signup and view all the answers

    What is the term for the process of 'cell drinking'?

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

    What is the main difference between early endosomes and late endosomes?

    <p>The type of cargo being transported</p> Signup and view all the answers

    What is the name of the protein involved in receptor-mediated endocytosis?

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

    What is the result of the fusion of a late endosome with a lysosome?

    <p>The degradation of cargo</p> Signup and view all the answers

    What is the term for the process by which a vesicle fuses with the plasma membrane to release its contents?

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

    What is the name of the disease that is an example of a lysosomal storage disorder?

    <p>Gaucher disease</p> Signup and view all the answers

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