Question

Protein enters the Golgi apparatus ________.

A) directly from the smooth endoplasmic reticulum
B) from a transport vesicle that enters the trans face of the Golgi apparatus
C) from a transport vesicle that enters the cis face of the Golgi apparatus
D) after leaving the rough endoplasmic reticulum
E) through a diffusive process

Answer 1

Proteins enter the Golgi apparatus from a transport vesicle that enters the cis face of the Golgi apparatus. The proteins are then modified and sorted within the Golgi apparatus before being packaged into additional transport vesicles that leave from the trans face.

Step-by-step explanation:

The protein enters the Golgi apparatus from a transport vesicle that enters the cis face of the Golgi apparatus. The transport vesicles that form from the endoplasmic reticulum (ER) travel to the receiving face, or cis face, of the Golgi apparatus, fuse with it, and empty their contents into the lumen of the Golgi apparatus. As the proteins and lipids travel through the Golgi, they undergo further modifications and are sorted before being packaged into additional transport vesicles that leave the Golgi apparatus from its trans face.