Which of the these is not a function of Golgi apparatus ?

Options

A. Site of synthesis of glycoproteins and glycolipids
B. Secrection
C. Membrane transformation
D. Site of protein synthesis

Explanation

**Step-by-Step Solution:**

1. **Understanding the Functions of Golgi Apparatus:**
The Golgi apparatus is an essential organelle in eukaryotic cells that plays a significant role in modifying, sorting, and packaging proteins and lipids for secretion or delivery to other organelles.

2. **Identifying the Functions:**
- **Synthesis of Glycoproteins and Glycolipids:** The Golgi apparatus is involved in the modification and synthesis of glycoproteins and glycolipids. It adds carbohydrate groups to proteins and lipids, which is crucial for their function.
- **Secretions:** The Golgi apparatus is responsible for packaging and secreting various substances, including hormones and enzymes, into vesicles that transport them to their destinations.
- **Membrane Transformation:** The Golgi apparatus plays a role in the transformation of membranes and the maintenance of the cell's lipid bilayer structure.

3. **Identifying the Incorrect Function:**
- The question asks for a function that is **not** associated with the Golgi apparatus. One of the options is "site of protein synthesis."
- It is important to note that protein synthesis occurs primarily at ribosomes, not in the Golgi apparatus. Therefore, this function does not belong to the Golgi apparatus.

4. **Conclusion:**
Based on the analysis, the correct answer is that the Golgi apparatus is **not** the site of protein synthesis. This function is performed by ribosomes.

**Final Answer:**
The function that is not associated with the Golgi apparatus is the "site of protein synthesis."

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