BIO NMDCAT Cytoplasmic Organelles
nmdcat.online July 4, 2026

50. The biochemical process of O-linked glycosylation, where sugar chains are attached to the hydroxyl groups of serine or threonine residues, takes place exclusively in the

A. Rough endoplasmic reticulum lumen
B. Golgi apparatus
C. Cytosolic matrix
D. Mitochondrial intermembrane region

📝 Explanation

While N-linked glycosylation begins in the ER, O-linked glycosylation occurs exclusively within the compartments of the Golgi apparatus.

📖 Additional Information

  • Rough endoplasmic reticulum lumen
  • Golgi apparatus
  • Cytosolic matrix
  • Mitochondrial intermembrane region

While N-linked glycosylation begins in the ER, O-linked glycosylation occurs exclusively within the compartments of the Golgi apparatus.

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