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

Options

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

Explanation

To determine which of the options is not a function of the Golgi apparatus, we can analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Functions of the Golgi Apparatus**:
- The Golgi apparatus is known for several key functions, including the modification, sorting, and packaging of proteins and lipids for secretion or delivery to other organelles.

2. **Evaluate Each Option**:
- **Option 1: Site of synthesis of glycoproteins and glycolipids**:
- This is a function of the Golgi apparatus. It modifies proteins and lipids and combines them to form glycoproteins and glycolipids.

- **Option 2: Secretion**:
- This is also a function of the Golgi apparatus. It packages proteins into vesicles that are then transported to the plasma membrane for secretion.

- **Option 3: Membrane transformation**:
- This is a function of the Golgi apparatus as well. It plays a role in transforming membranes, such as those from the endoplasmic reticulum (ER) to the plasma membrane.

- **Option 4: Site of protein synthesis**:
- This is NOT a function of the Golgi apparatus. Protein synthesis occurs in the ribosomes, particularly on the rough endoplasmic reticulum (RER).

3. **Conclusion**:
- The correct answer is **Option 4: Site of protein synthesis**, as this is not a function of the Golgi apparatus.

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

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