Question

Which organelle is often compared to a post office, moving proteins and lipids to where they need to go?

Answer 1

the golgi apparatus

The Golgi apparatus is a large organelle that sends proteins and lipids where they need to go. Its like a post office. It receives molecules from the endoplasmic reticulum. It packages and labels the molecules. Then it sends them where they are needed. Some molecules are sent to different parts of the cell. Others are sent to the cell membrane for transport out of the cell. Small bits of membrane pinch off the Golgi apparatus to enclose and transport the proteins and lipids. You can see a Golgi apparatus at work in this animation:.