Most protein synthesis happens on the surface of the ___________.
A) rough endoplasmic reticulum
B) smooth endoplasmic reticulum
C) Golgi complex
D) mitochondrion
E) nucleus

Question

Quizplus · Accepted Answer

Most protein synthesis occurs on the surface of the rough endoplasmic reticulum (ER), which is studded with ribosomes. The ribosomes synthesize proteins that are inserted into or secreted from the ER. The smooth ER is involved in lipid metabolism and does not play a significant role in protein synthesis. The Golgi complex and mitochondria are involved in post-translational modifications of proteins and ATP synthesis, respectively, but not in protein synthesis itself. The nucleus is involved in DNA replication and transcription, but not in protein synthesis directly.

Most Protein Synthesis Happens on the Surface of the ___________