Golgi apparatus is associated with

Options

A. Post translational protein modification
B. Glycosylation of lipids
C. Gycosidation of proteins
D. Co-translational protein processing

Answer

To answer the question regarding what the Golgi apparatus is associated with, we can break down the information step by step:

### Step-by-Step Solution:

1. **Understanding the Golgi Apparatus**: The Golgi apparatus is a crucial organelle in the cell that plays a significant role in the processing and packaging of proteins and lipids.

2. **Association with Post-Translational Modification**: The Golgi apparatus is primarily involved in post-translational modifications of proteins. This means that after proteins are synthesized in the rough endoplasmic reticulum (RER), they undergo various modifications in the Golgi apparatus before being sent to their final destinations.

3. **Glycosylation of Lipids and Proteins**: The Golgi apparatus is also responsible for glycosylation, which is the addition of carbohydrate groups to proteins and lipids. This process is essential for the proper functioning of these molecules.

4. **Co-Translational Protein Processing**: This process occurs primarily in the rough endoplasmic reticulum (RER) where proteins are synthesized. The Golgi apparatus does not play a direct role in co-translational processing.

5. **Conclusion**: Based on the functions of the Golgi apparatus, it is associated with post-translational protein modification, glycosylation of lipids, and glycosylation of proteins. However, it is not associated with co-translational protein processing.

### Final Answer:
The Golgi apparatus is associated with **post-translational protein modification** (Option A).