Smallest cell organelles are

Options

A. Lysosome
B. Sphaerosomes
C. Peroxisomes
D. Ribosomes

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the smallest cell organelles among the given options: Lysosome, Spherosomes, Peroxisomes, and Ribosomes.

2. **Analyzing the Options**:
- **Lysosomes**: These are membrane-bound organelles that contain digestive enzymes. They are relatively larger than ribosomes.
- **Spherosomes**: Also known as oleosomes, these are involved in lipid storage and are larger than ribosomes.
- **Peroxisomes**: These are involved in the breakdown of fatty acids and detoxification processes. They are also larger than ribosomes.
- **Ribosomes**: These are small, non-membrane-bound organelles that are the sites of protein synthesis. They are composed of ribosomal RNA and proteins.

3. **Comparing Sizes**: Among the listed organelles, ribosomes are the smallest in size. They typically measure around 20-30 nanometers in diameter, while the other organelles are significantly larger.

4. **Conclusion**: Based on the analysis, the smallest cell organelle is ribosomes.

5. **Final Answer**: The correct answer is option D, Ribosomes.

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