What Must Happen to a Newly Made Polypeptide Before It

question 24

Multiple Choice

What must happen to a newly made polypeptide before it can be secreted from a cell?

• A)It must be translated by a ribosome that remains free of attachment to the ER.
• B)Its signal sequence must target it to the ER,after which it goes to the Golgi.
• C)Its signal sequence must be cleaved off before the polypeptide can enter the ER.
• D)Its signal sequence must target it to the plasma membrane,where it causes exocytosis.

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