Final answer:
Proteins and lipids are delivered and transported within the endomembrane system, with the Golgi apparatus playing a central role in sorting and packaging. Transport vesicles bud off from the endoplasmic reticulum and fuse with the Golgi apparatus, where the molecules are processed and packaged into new vesicles.
Step-by-step explanation:
Proteins and lipids are delivered and transported within the endomembrane system, which includes organelles such as the Golgi apparatus, lysosomes, endosomes, and the inner nuclear membrane.
The Golgi apparatus plays a central role in sorting, packaging, and tagging proteins and lipids for delivery to their final destinations. Transport vesicles bud off from the endoplasmic reticulum (ER) and fuse with the Golgi apparatus.
Within the Golgi apparatus, the proteins and lipids are processed, and then additional transport vesicles containing the modified molecules pinch off from the Golgi apparatus and move to fuse with the plasma membrane or other organelles.