This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Unknown
The common function of Golgi apparatus and endoplasmic reticulum - 
Select and explain. 
A. Protein synthesis, B. Protein degradation, C. Post-transcriptional modification, D. Glycosylation
D: Glycosylation
Answer: D: Glycosylation 
Explanation: Ans. is 'd > c' i.e., Glycosylation > Post-translational modification Note: Glycosylation is a critical function of the biosynthetic-secretory pathway in the endoplasmic reticulum (ER) and Golgi apparatus o Golgi apparatus and ER are involved in glycosylation process o Glycosylation is a type of post-translational modification.