In eukaryotic cells, sugar residues are covalently attached to proteins through the process of glycosylation.This posttranslational modification occurs
A) in the nucleus.
B) on free ribosomes.
C) in mitochondria.
D) on the RER and Golgi apparatus.
E) in lysosomes.

Question

Quizplus · Accepted Answer

Glycosylation occurs on the rough endoplasmic reticulum (RER) and is further modified in the Golgi apparatus, which are both organelles in the eukaryotic cell. Therefore, option D is the best choice.

In Eukaryotic Cells, Sugar Residues Are Covalently Attached to Proteins