Endoplasmic Reticulum (ER): The endoplasmic reticulum is an extensive network of interconnected, membrane-bound tubes and flattened sacs (cisternae) that play a crucial role in protein synthesis, folding, and transport within the cell.
Golgi Apparatus: The Golgi apparatus is a organelle composed of stacks of cisternae that receives, modifies, and sorts proteins and other molecules for distribution to their intended destinations within or outside the cell.
Vesicle: Vesicles are small, membrane-bound sacs that transport materials, such as proteins and other molecules, between different organelles or to the cell membrane for secretion.