ECM Proteins are Made by Ribosomes in Which Part of a Eukaryotic

Question

ECM proteins are made by ribosomes in which part of a eukaryotic cell?
A) mitochondria
B) cytoplasm
C) nuclear envelope
D) Golgi apparatus
E) rough ER

Accepted Answer

ECM proteins are secreted proteins that are synthesized by ribosomes attached to the rough endoplasmic reticulum (ER), which is responsible for protein synthesis and modification. Once synthesized, the proteins are transported to the Golgi apparatus, where they undergo additional processing and packaging before being secreted into the extracellular space. Therefore, the correct answer is E, rough ER.