The principal function of Golgi apparatus is

Options

A. Producing enzymes
B. Protein synthesis
C. Synthesis of lipids
D. Packaging materials

Answer

**Step-by-Step Solution:**

1. **Understanding the Golgi Apparatus**: The Golgi apparatus is a membrane-bound organelle found in eukaryotic cells. It plays a crucial role in processing and packaging proteins and lipids.

2. **Structure of the Golgi Apparatus**: It consists of a series of flattened, stacked pouches called cisternae. These structures are essential for its function.

3. **Principal Functions**: The main functions of the Golgi apparatus include:
- Modifying proteins received from the endoplasmic reticulum (ER).
- Sorting and packaging these proteins for transport to different destinations within or outside the cell.

4. **Transport Mechanism**: After modification and packaging, the Golgi apparatus sends proteins to various parts of the cell or outside the cell using small vesicles.

5. **Analyzing the Options**:
- **Producing enzymes**: Incorrect. Enzymes are proteins synthesized in the rough endoplasmic reticulum.
- **Protein synthesis**: Incorrect. This is primarily the function of ribosomes and the rough endoplasmic reticulum.
- **Synthesis of lipids**: Incorrect. Lipid synthesis occurs in the smooth endoplasmic reticulum.
- **Packaging material**: Correct. The Golgi apparatus is primarily responsible for the packaging of proteins and other materials.

6. **Conclusion**: The principal function of the Golgi apparatus is the packaging of materials, particularly proteins, for transport.

**Final Answer**: The principal function of the Golgi apparatus is packaging material.

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