Cellular Endocytosis Processes Quiz
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Questions and Answers

Which process involves a cell engulfing a particle by extending pseudopodia around it?

  • Phagocytosis (correct)
  • Receptor-mediated endocytosis
  • Pinocytosis
  • Exocytosis
  • What type of endocytosis involves coated pits on the cytoplasmic side of vesicles?

  • Exocytosis
  • Phagocytosis
  • Receptor-mediated endocytosis (correct)
  • Pinocytosis
  • In receptor-mediated endocytosis, what plays a key role in the specific uptake of molecules into the cell?

  • Coat proteins on the cytoplasmic side (correct)
  • Infolding of the plasma membrane
  • Food vacuole fusion with a lysosome
  • Pseudopodia
  • Which characteristic distinguishes receptor-mediated endocytosis from pinocytosis?

    <p>Specificity in the uptake of molecules</p> Signup and view all the answers

    How do receptors play a role in receptor-mediated endocytosis?

    <p>Receptor proteins are recycled to the plasma membrane after being clustered in coated pits.</p> Signup and view all the answers

    What is the main difference between pinocytosis and receptor-mediated endocytosis?

    <p>Pinocytosis is nonspecific, while receptor-mediated endocytosis is specific for certain substances.</p> Signup and view all the answers

    What happens to the receptor proteins after they have facilitated endocytosis in receptor-mediated endocytosis?

    <p>The receptor proteins are recycled back to the plasma membrane.</p> Signup and view all the answers

    What enables human cells to take in cholesterol in large quantities for membrane synthesis?

    <p>The presence of cholesterol receptors on the plasma membrane</p> Signup and view all the answers

    What is the main mechanism by which large molecules such as proteins and polysaccharides enter and leave the cell?

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

    Which process involves the cell secreting molecules by the fusion of vesicles with the plasma membrane?

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

    What type of cells use exocytosis to release neurotransmitters that signal other neurons or muscle cells?

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

    In which process does the cell take in molecules and particulate matter by forming new vesicles from the plasma membrane?

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

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