McGraw-Hill Online Learning Center Test

1. Review the image and answer the following questions.

Where do proteins go next from the rough endoplasmic reticulum if they are to be transported from the cell?

A. They enter the Cis face of the Golgi apparatus where they are modified and packaged into secretory vesicles.
B. They enter the Trans face of the Golgi apparatus and are expelled from the Cis face.
C. They enter the cisternae of the Golgi apparatus where it may take up to a year to correctly modify the protein for excretion.
D. They enter the smooth endoplasmic reticulum where they are packaged for secretion from the cell.

2. What is one reason why proteins are transported within vesicles inside the cell rather than being transported without vesicles?

A. to prevent them from folding into their 3-dimensional shapes
B. to minimize the possibility that they will gather additional amino acids
C. to prevent them from interacting with other proteins or components of the cell
D. to keep them from hydrolyzing and disassembling

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