Design an experiment to test the role of the SRP in co-translational import of proteins into the ER.

• A. Assess the formation of disulfide bonds in proteins in cells with and without SRP.
• B. Use a mutant cell line lacking SRP and compare protein localization to wild-type cells.
• C. Measure the rate of GTP hydrolysis in cells with and without SRP.
• D. Compare the glycosylation patterns of proteins in cells with and without SRP.

Answer: (B)