Multiple Choice
Which cell type is most likely to perform exocytosis?
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6. The Membrane
Endocytosis and Exocytosis
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Which best describes the role of exocytosis in cell transport?
A
Exocytosis is the process by which cells engulf large particles from the external environment.
B
Exocytosis is the process by which cells transport molecules across the membrane using passive diffusion.
C
Exocytosis is the process by which cells release large molecules to the outside environment.
D
Exocytosis is the process by which cells take in small molecules through membrane invagination.
Verified step by step guidance1
Understand the definition of exocytosis: Exocytosis is a cellular process where cells expel materials to the external environment. This involves the fusion of vesicles with the plasma membrane to release their contents outside the cell.
Differentiate exocytosis from endocytosis: While exocytosis involves expelling materials, endocytosis is the process of taking in substances by engulfing them with the cell membrane.
Identify the types of molecules involved: Exocytosis typically involves the release of large molecules such as proteins, neurotransmitters, or waste products that are packaged in vesicles.
Consider the mechanism: During exocytosis, vesicles containing the molecules to be expelled move towards the cell membrane, fuse with it, and release their contents outside the cell.
Evaluate the options given: The correct description of exocytosis is the process by which cells release large molecules to the outside environment, distinguishing it from other processes like passive diffusion or membrane invagination.
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