What are the two sites within a cell at which protein synthesisoccurs?
A)cytosolic surface of RER and cisternal surface of RER
B)cytosolic surface of RER and free ribosomes
C)cisternal surface of RER and free ribosomes
D)free ribosomes and cytosolic surface of SER
E)cytosolic surface of RER and cytosolic surface of SER

Question

Quizplus · Accepted Answer

Protein synthesis occurs at the cytosolic surface of the rough endoplasmic reticulum (RER) and on free ribosomes in the cytosol. The RER is involved in the synthesis of proteins destined for secretion or for use in the cell membrane, while free ribosomes synthesize proteins used within the cell.

What Are the Two Sites Within a Cell at Which