What are sacs that contain materials in a eukaryotic cell

Vesicle are sacs that contain materials in a eukaryotic cell.

Cells are the building blocks of these structures and which creates such organ and organ system. They associate as one cell intercommunicates with another cell until all received the message and translates it and sends it with another organ and to cell -vice-versa. And also, they become interdependent with the other cell -other tissue -other organs -other organ system.