Golgi Apparatus MCQs Quiz | Class 9
This Class IX Science quiz covers Unit II: Organization in the Living World, specifically focusing on the Golgi Apparatus. The questions test your knowledge of its structure (cisternae), key functions like packaging and secretion, and its role in forming lysosomes. Submit your answers to check your score and download the PDF summary.
Overview of the Golgi Apparatus
The Golgi apparatus, first described by Camillo Golgi, consists of a system of membrane-bound vesicles (flattened sacs) arranged approximately parallel to each other in stacks called cisternae. These membranes often have connections with the membranes of the endoplasmic reticulum (ER) and constitute another portion of a complex cellular membrane system.
Key Functions
The material synthesized near the ER is packaged and dispatched to various targets inside and outside the cell through the Golgi apparatus. Its functions include:
- Storage: Holding products synthesized by the cell.
- Modification: Altering proteins and lipids (e.g., converting simple sugars to complex sugars).
- Packaging: Wrapping materials in vesicles for transport.
- Secretion: Releasing substances to the cell exterior or other organelles.
- Lysosome Formation: It is involved in the formation of lysosomes.
Structure Details
| Feature | Description |
|---|---|
| Cis face | The “forming” face that receives vesicles from the ER. |
| Trans face | The “maturing” face from which vesicles are released. |
| Dictyosomes | The term often used for unconnected Golgi units in plant cells. |
Quick Revision Points
- Discovery: Described by Camillo Golgi in 1898.
- Nature: Pleomorphic organelle (can change shape).
- Absence: Not found in prokaryotes (like bacteria and blue-green algae) and mature mammalian RBCs.
- Role: Acts as the “Post Office” of the cell by sorting and shipping proteins.
Practice Questions
- What is the function of the cis face of the Golgi apparatus?
- Why is the Golgi apparatus called the cell’s secretory organelle?
- How does the Golgi apparatus assist in membrane biogenesis?
- Differentiate between Golgi in plant and animal cells.
- What would happen to the cell if the Golgi apparatus is removed?
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