Sequence of vesicle transpo is
**Core Concept**
The process of vesicle transport is crucial for various cellular functions, including endocytosis, exocytosis, and transport of molecules across cell membranes. This sequence involves the formation, movement, and fusion of vesicles with their target membranes.
**Why the Correct Answer is Right**
The sequence of vesicle transport typically begins with the formation of clathrin-coated vesicles at the plasma membrane, which then undergoes endocytosis (A). These vesicles then fuse with early endosomes (B), which is followed by sorting and recycling of cargo in late endosomes (C). Finally, the remaining cargo is either degraded in lysosomes or transported to the Golgi apparatus for further processing. The correct sequence is thus: Endocytosis β Early Endosomes β Late Endosomes β Lysosomes.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it only mentions endocytosis, which is a part of the sequence but not the entire process.
**Option B:** This option is incorrect because it only mentions early endosomes, which is a stage in the sequence but not the entire process.
**Option C:** This option is incorrect because it only mentions late endosomes, which is a stage in the sequence but not the entire process.
**Clinical Pearl / High-Yield Fact**
A key aspect of vesicle transport is its role in cellular homeostasis and disease, including neurodegenerative disorders such as Alzheimer's disease, where impaired endocytosis and vesicle transport contribute to amyloid-beta accumulation.
**Correct Answer: D. Endocytosis β Early Endosomes β Late Endosomes β Lysosomes**