Final answer:
Coated vesicles are involved in various cellular processes, and there are three types: clathrin-coated vesicles, COP I-coated vesicles, and COP II-coated vesicles.
Step-by-step explanation:
Coated vesicles are involved in various cellular processes, including endocytosis and exocytosis. There are three types of coated vesicles:
- Clathrin-coated vesicles: These vesicles are formed during receptor-mediated endocytosis, where receptors bind to specific extracellular substances and the coated pits invaginate to form clathrin-coated vesicles.
- COP I-coated vesicles: These vesicles are involved in retrograde transport from the Golgi apparatus back to the endoplasmic reticulum. They transport proteins that need to be recycled or modified.
- COP II-coated vesicles: These vesicles are involved in anterograde transport from the endoplasmic reticulum to the Golgi apparatus. They transport newly synthesized proteins from the endoplasmic reticulum to the Golgi for further processing.