The cell organelle of the endomembrane system that divides the intracellular space into two distinct compartments is

Options

A. Golgi complex
B. Endoplasmic reticulum
C. Vacuole
D. Lysosomes

Answer

To solve the question regarding the cell organelle of the endomembrane system that divides the intracellular space into two distinct compartments, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific organelle within the endomembrane system that separates the intracellular space into two compartments.

2. **Review the Options**:
- **Option 1: Golgi Complex**: This organelle is primarily involved in the sorting, modifying, and packaging of proteins. It does not divide the intracellular space into compartments.
- **Option 2: Endoplasmic Reticulum (ER)**: The ER is known to be a key player in the endomembrane system. It comes in two forms: rough ER (involved in protein synthesis) and smooth ER (involved in lipid synthesis). The ER indeed divides the intracellular space into distinct compartments.
- **Option 3: Vacuole**: Vacuoles are primarily involved in storage and maintaining osmotic balance, not in dividing the intracellular space.
- **Option 4: Lysosome**: Lysosomes are responsible for digestion and waste removal within the cell, not for compartmentalization.

3. **Identify the Correct Answer**: Based on the functions of the organelles reviewed, the **Endoplasmic Reticulum (ER)** is the correct answer as it divides the intracellular space into two distinct compartments.

4. **Conclusion**: The cell organelle of the endomembrane system that divides the intracellular space into two distinct compartments is the **Endoplasmic Reticulum**.

### Final Answer:
The correct answer is **Endoplasmic Reticulum**.

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