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

Options

A. Golgi body
B. Endoplasmic reticulum
C. Nuclear membrane
D. Mitochondria

Answer

To solve the question, "The cell organelle that divides the intracellular space into two distinct compartments is," we will analyze the options provided and determine which organelle fits the description.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a cell organelle that divides the intracellular space into two distinct compartments. This means we are looking for an organelle that creates a separation within the cell.

2. **Evaluating Options**:
- **Option A: Golgi Apparatus**: The Golgi apparatus is involved in modifying, sorting, and packaging proteins and lipids. It does not create compartments within the cell; rather, it processes materials that are already in the cell. Therefore, it is not the correct answer.

- **Option B: Endoplasmic Reticulum (ER)**: The endoplasmic reticulum is a network of membranes that forms a series of tubules and sacs. It is connected to the nuclear envelope and extends throughout the cytoplasm. The ER can be rough (with ribosomes) or smooth (without ribosomes). The rough ER, in particular, divides the cytoplasm into distinct regions, creating compartments within the cell. This makes it a strong candidate for the answer.

- **Option C: Nuclear Membrane**: The nuclear membrane surrounds the nucleus and is a double membrane structure. While it separates the nucleus from the cytoplasm, it does not divide the intracellular space into two compartments within the cytoplasm itself. Thus, it is not the correct answer.

- **Option D: Mitochondria**: Mitochondria are double-membraned organelles that produce energy. They do create compartments (the intermembrane space and the matrix), but they do not divide the overall intracellular space into two distinct compartments like the ER does. Therefore, this option is also incorrect.

3. **Conclusion**: After evaluating all the options, the endoplasmic reticulum (ER) is the organelle that divides the intracellular space into two distinct compartments. Thus, the correct answer is **Endoplasmic Reticulum**.

### Final Answer:
The cell organelle that divides the intracellular space into two distinct compartments is the **Endoplasmic Reticulum**.