What organelles transport materials out of a cell, and are formed at the Golgi Bodies?

• A. Cytoskeleton
• B. Vesicles
• C. Mitochondria
• D. Ribosomes

Answer: (B)

Materials that leave a cell are packaged into vesicles. The Golgi apparatus acts like a shipping center: it receives molecules from the endoplasmic reticulum, sorts them, and wraps them into vesicles. These vesicles pinch off from the Golgi and then move to the cell membrane, where they fuse with it and release their contents outside the cell (exocytosis). This is how proteins and other substances are transported out.

Other organelles have different roles: the cytoskeleton helps with movement and support and can guide vesicles along tracks; mitochondria provide energy for the cell; ribosomes build proteins, but none of these are the small sacs formed by the Golgi to export materials.