What Evidence Suggests That Proteins Are Synthesized and Modified in the Rough

Multiple Choice

What evidence suggests that proteins are synthesized and modified in the rough ER as opposed to the smooth ER?

A) Ribosomes are associated with the surface of the rough ER.
B) Ribosomes are associated with the surface of the smooth ER.
C) Proteins can be found in the membrane of the rough ER but not the smooth ER.
D) The smooth ER functions in the synthesis of phospholipids.
E) Smooth ER is continuous with rough ER.