Final answer:
Non-vesicular lipid trafficking is the movement of lipids into or out of a cell without the involvement of vesicles. Two examples include receptor-mediated endocytosis of LDL cholesterol and transport of lipids from the ER to the Golgi apparatus.
Step-by-step explanation:
Vesicle transport is a type of active transport in which substances are carried across a cell membrane by vesicles. Non-vesicular lipid trafficking refers to the movement of lipids into or out of a cell without the involvement of vesicles. Two examples of non-vesicular lipid trafficking include:
- Receptor-mediated endocytosis of low density lipoprotein (LDL) cholesterol, where LDL particles bind to specific receptors on the cell surface and are internalized through the formation of coated pits and vesicles.
- Transport of lipids from the endoplasmic reticulum (ER) to the Golgi apparatus, where transport vesicles fuse with the cis face of the Golgi and transfer lipids for further modification.