The golgi components are bound by :

Options

A. Single unit membrane
B. Double unit membrane
C. Cisternae by single, tubules and vacuole by double
D. Cisternae and tubules by single and vacuole by double

Answer

**Step-by-Step Solution:**

1. **Understanding the Golgi Components**: The question asks about the components of the Golgi apparatus and what they are bound by. The Golgi apparatus is a crucial organelle in the cell involved in modifying, sorting, and packaging proteins and lipids.

2. **Identifying the Membrane Structure**: The Golgi apparatus is composed of a series of flattened membrane-bound sacs known as cisternae. Each of these cisternae is surrounded by a membrane.

3. **Determining the Type of Membrane**: The membranes that bound the Golgi components are referred to as a "single unit membrane." This means that each cisterna is surrounded by a single lipid bilayer.

4. **Conclusion**: Based on the understanding that the Golgi components are bound by a single unit membrane, we can conclude that the correct answer to the question is option A.

5. **Additional Functions of the Golgi Apparatus**: The Golgi apparatus is involved in several important cellular functions, including:
- Protein secretion
- Formation of lysosomes
- Synthesis of cellulose and hemicellulose

**Final Answer**: The Golgi components are bound by a single unit membrane (Option A).

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