Which one of the following is not considered as a part of the endomembrane system ?

Options

A. Golgi complex
B. proxisome
C. vacuole
D. lysosome

Answer

To determine which organelle is not considered a part of the endomembrane system, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Endomembrane System**: The endomembrane system consists of a group of membranous organelles that work together to modify, package, and transport lipids and proteins. Key components include the endoplasmic reticulum, Golgi apparatus, lysosomes, and vacuoles.

2. **Identify the Components**:
- **Endoplasmic Reticulum (ER)**: Responsible for synthesizing proteins and lipids.
- **Golgi Apparatus**: Modifies and packages proteins and lipids received from the ER.
- **Lysosomes**: Contain enzymes for digestion and waste processing.
- **Vacuoles**: Store substances and help in transport within the cell.

3. **Review the Options**: The question likely provides a list of organelles, among which we need to identify the one that is not part of the endomembrane system.

4. **Analyze Each Option**:
- **Golgi Apparatus**: Part of the endomembrane system.
- **Lysosomes**: Part of the endomembrane system.
- **Vacuoles**: Part of the endomembrane system.
- **Peroxisomes**: Not part of the endomembrane system. They are involved in metabolic processes, such as breaking down fatty acids and detoxifying harmful substances.

5. **Conclusion**: Based on the analysis, the organelle that is not considered part of the endomembrane system is **Peroxisomes**.

### Final Answer:
**Peroxisomes** are not considered a part of the endomembrane system.

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