3.2.2 Cell Function: Golgi Apparatus

Question 1

review

Answer 1

• The nuclear membrane, rough and smooth ER, Golgi apparatus, lysosomes, food vacuoles, and plasma membrane form an integrated system called the endomembrane system, by which protein and other molecules are synthesized and/or processed.
• The Golgi apparatus receives molecular packages from the ER in the form of transport
  vesicles.

Question 2

The Golgi apparatus acts as the post office of the cell. It receives proteins, lipids, and other molecular packages from the endoplasmic reticulum and processes them by performing three major functions:

Answer 2

• It separates proteins and lipids from the ER according to their destination.
• It modifies some molecules, especially proteins.
• It packages the materials into vesicles that are transported to other parts of the cell.

Question 3

golgi apparatus

Answer 3

• a stack of flat membranous sacs derived from the

endoplasmic reticulum

Question 4

Vesicles

Answer 4

• enter the cis face of the Golgi apparatus; the side that faces the endoplasmic reticulum. Vesicles leave via the
  trans face; the side that faces the outside of the cell.

Question 5

exocytosis

Answer 5

- Proteins are transferred down the Golgi apparatus by a continuous process of vesicle formation and release. The proteins enter the cis face of the Golgi apparatus. Processed material is finally released from the plasma
membrane side (the trans face) of the Golgi apparatus by exocytosis.

Question 6

All of the following are functions of the Golgi apparatus except

Answer 6

• protein synthesis

Question 7

Choose the correct order of the events of glycoprotein processing.

Answer 7

• rough ER to transport vesicles to cis region of Golgi apparatus to trans region of Golgi apparatus

Question 8

True or false?

Docking molecules will be found on the cis face of the Golgi apparatus.

Answer 8

• true

Question 9

Which of the following statements regarding the orientation of the Golgi apparatus is correct?

Answer 9

• The cis face of the Golgi, the receiving side, is typically near the ER

Question 10

The __________ consists of stacked, membranous sacs. The cytosolic side of __________ is studded with ribosomes. __________ are membrane-bound compartments in the cytoplasm.

Answer 10

• Golgi apparatus; the rough endoplasmic reticulum; vesicles

Question 11

Cisternae

Answer 11

• are flattened stacks of membrane that make up the Golgi apparatus.

Question 12

Transport vesicles

Answer 12

• transfer proteins from the ER to the Golgi apparatus