A protein that is destined to be secreted from the cell
A) has a signal sequence that targets it to the plasma membrane.
B) is made solely by ribosomes free in the cytosol.
C) has a signal sequence that targets its translation into the lumen of the RER.
D) is targeted to the RER as a soluble protein.
E) is targeted directly to lysosomes.

Question

Quizplus · Accepted Answer

A protein that is destined to be secreted from the cell has a signal sequence that targets its translation into the lumen of the RER. This allows the protein to enter the endomembrane system where it can be properly folded and modified before being transported to its final destination. This process is known as the secretory pathway.

A Protein That Is Destined to Be Secreted from the Cell