McGraw-Hill Online Learning Center Test

McGraw-Hill Online Learning Center Test


1. Review the image and answer the following questions.

What is the function of the signal sequences, which in this case is made up of hydrophobic amino acids?

A. The signal sequences slow the process of translation.
B. The signal sequences initiate the process of translation.
C. The signal sequences direct proteins to their destinations in the cell.
D. The signal sequences direct the location for the attachment of small sugar groups to the protein.


2. What happens to the signal sequence after the leading edge of the protein enters the lumen of the ER?

A. The signal sequence self-replicates, becoming the terminal end of the protein.
B. The signal sequence is clipped off, leaving the protein.
C. The signal sequence is incorporated into a polyribosome complex.
D. The signal sequence folds around the ribosome and is added to the opposite end of the protein.
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