Multiple Choice
When a vesicle fuses to the plasma membrane what happens to the lipids in the vesicles?
13. Intracellular Protein Transport
Exocytosis
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Which of the following is not a pathway of exocytosis?
A
Constitutive secretory pathway
B
Regulated secretory pathway
C
Continuing secretory pathway
Verified step by step guidance1
Understand the concept of exocytosis: Exocytosis is a cellular process where substances are transported out of the cell through vesicles that fuse with the plasma membrane.
Identify the known pathways of exocytosis: The two main pathways are the constitutive secretory pathway and the regulated secretory pathway.
Define the constitutive secretory pathway: This pathway operates continuously, allowing cells to secrete proteins and lipids without any specific signal.
Define the regulated secretory pathway: This pathway requires a signal to trigger the release of substances, often used for hormones or neurotransmitters.
Evaluate the options: The 'Continuing secretory pathway' is not a recognized term in cell biology, making it the correct answer as it does not describe a known exocytosis pathway.
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