Final answer:
The Golgi apparatus has a cis and trans face and processes proteins and lipids received from the ER, modifying them for cell distribution.
Step-by-step explanation:
The Golgi apparatus is the cellular organelle that has a cis and trans face and is responsible for receiving proteins and lipids from the endoplasmic reticulum (ER). Transport vesicles from the ER fuse with the Golgi apparatus at its cis face, releasing their contents into the lumen for processing. The proteins and lipids undergo various modifications as they travel through the Golgi apparatus, including the addition of sugar molecule chains (glycosylation) and the attachment of phosphate groups (phosphorylation). This process tags the molecules for their proper destinations within the cell. After their synthesis and modification in the Golgi, the proteins and lipids are packaged into new vesicles which bud off from the trans face and are then directed to their destinations such as the plasma membrane or other organelles.