Knowledge Check: Organelles and Compartmentalization

Which comes first?

• Transport vesicle buds from the smooth or rough ER.

• Transport vesicle fuses with Golgi apparatus.

Which comes first?

• Proteins are released from the cell via exocytosis.

• Golgi apparatus modifies proteins as they move through its successive chambers.

Choose the right match.

• I: Secretory vesicle, II: Transport vesicle

• I: Transport vesicle, II: Secretory vesicle

Shuttles proteins and lipids to various locations such as the Golgi apparatus

• Secretory vesicle

• Transport vesicle

• Lysosome

• Endoplasmic reticulum

Modifies lipids and proteins from the ER; sorts them and packages them in vesicles

• Secretory vesicle

• Golgi apparatus

• Lysosome

• Endoplasmic reticulum

Synthesizes proteins and packages them in vesicles; vesicles commonly go to the Golgi Apparatus

• Secretory vesicle

• Golgi apparatus

• Lysosome

• Endoplasmic reticulum

A large complex of proteins that allows small molecules and ions to freely pass, or diffuse, into or out of the nucleus. 

• Secretory vesicle

• Golgi apparatus

• Ribosome

• Nuclear pore

TRUE OR FALSE: Phospholipids that are a part of the nuclear envelope (membrane around the nucleus) can easily move from one part of the cell to another, and may ultimately become part of the cell membrane, the ER, a vesicle membrane, etc.  In fact, any phospholipid may be called a “cellular tourist” because it is able to move about to virtually any part of a cell and can even become a part of  a cell in a different region of the body!

• True

• False