Question

Golgi apparatus plays important role in

• A. Protein synthesis
• B. Protein glycosylation
• C. Protein degradation
• D. Metabolism of nucleosides

Hint:

Think of the Golgi apparatus as a processing and packaging center. It modifies proteins (e.g., adding sugar groups via glycosylation) before sorting and sending them to their final destination.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The Golgi apparatus acts as the primary dispatch, sorting, and chemical modification hub for proteins arriving from the endoplasmic reticulum.

Step 2: Detailed Explanation:
Let us review the roles of different organelles:
1. Protein synthesis: Conducted by ribosomes on the rough endoplasmic reticulum or in the cytoplasm.
2. Protein glycosylation: The Golgi apparatus contains a series of glycosyltransferase enzymes that sequentially modify oligosaccharide chains on proteins (N-linked modifications and O-linked glycosylation) as they move from the cis to the trans face. Thus, it plays an essential role in glycosylation.
3. Protein degradation: Carried out by lysosomes or the proteasome system.

Step 3: Final Answer:
The correct option is 2, which corresponds to Protein glycosylation.