A certain cell organelle controls various activities of the cell such as protein synthesis. It also contains the hereditary information of an organism.
The described cell organelle is the

Options

A. nucleus
B. ribosome
C. chloroplast
D. mitochondrion

Answer

**Step-by-Step Solution:**

1. **Identify the Functions Described**: The question states that the cell organelle controls various activities of the cell, including protein synthesis, and contains hereditary information.

2. **Analyze the Options**: We need to evaluate the given options to find which organelle fits both criteria:
- **Nucleus**: This organelle is known to contain the hereditary information (DNA) of an organism and plays a crucial role in regulating cell activities, including protein synthesis.
- **Ribosome**: While ribosomes are the sites of protein synthesis, they do not contain hereditary information.
- **Chloroplast**: This organelle is involved in photosynthesis, not in controlling cell activities or containing hereditary information.
- **Mitochondria**: Mitochondria are responsible for cellular respiration, not for controlling cell activities or containing hereditary information.

3. **Conclusion**: Based on the analysis, the only organelle that fits both criteria (controlling cell activities and containing hereditary information) is the **Nucleus**.

**Final Answer**: The described cell organelle is the **Nucleus**.

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