Which of the following membrane-enclosed organelles is the site of synthesis of membrane proteins and secretory proteins?
A)rough endoplasmic reticulum
B)smooth endoplasmic reticulum
C)nucleus
D)lysosome
E)Golgi complex

Question

Quizplus · Accepted Answer

The rough endoplasmic reticulum (RER) is studded with ribosomes and is responsible for the synthesis of membrane proteins and secretory proteins that will be transported to other parts of the cell or to be secreted outside of the cell. The ribosomes on the RER translate the mRNA into protein, which is then modified, folded and processed inside the RER before moving onto the Golgi complex.

Which of the Following Membrane-Enclosed Organelles Is the Site of Synthesis