Which organelle is also called director of the cell?

Options

A. A. Mitochondria
B. B. Nucleus
C. C. Chloroplast
D. D. Ribosomes

Explanation

### Step-by-Step Solution:

1. **Identify the Question**: The question asks which organelle is referred to as the "director of the cell."

2. **Analyze the Options**: The options provided are:
- A) Mitochondria
- B) Nucleus
- C) Chloroplast
- D) Triposome

3. **Recall the Functions of Each Organelle**:
- **Mitochondria**: Known as the powerhouse of the cell, responsible for energy production.
- **Nucleus**: Contains the cell's genetic material (DNA) and controls cell activities.
- **Chloroplast**: Involved in photosynthesis in plant cells.
- **Triposome**: This option is not commonly recognized in cell biology.

4. **Determine the Role of the Nucleus**: The nucleus is often referred to as the "director" because:
- It controls and conducts the activities within the cell.
- It houses the genetic information in the form of DNA and chromosomes.
- It regulates the metabolism of the cell.

5. **Conclude the Answer**: Based on the functions of the organelles and the specific role of the nucleus, the correct answer is **B) Nucleus**.

### Final Answer:
The organelle that is also called the director of the cell is the **Nucleus**.

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