Histones are present in

Options

A. Cell membrane
B. Lysosomes
C. Nucleosomes
D. Sphaerosomes.

Answer

**Step-by-Step Solution:**

1. **Understanding Histones**: Histones are alkaline proteins that are crucial for DNA packaging in eukaryotic cells. They play a significant role in the structure of chromatin.

2. **Identifying the Options**: The options provided are:
- A) Cell membrane
- B) Lysosomes
- C) Nucleosomes
- D) Cepharosomes

3. **Analyzing Each Option**:
- **Cell Membrane**: This is a lipid bilayer that surrounds the cell and does not contain histones.
- **Lysosomes**: These are organelles that contain digestive enzymes and are not associated with histones.
- **Nucleosomes**: These are structural units of chromatin, consisting of DNA wrapped around a core of histone proteins. This is where histones are primarily found.
- **Cepharosomes**: This term is not commonly used in cell biology and does not relate to histones.

4. **Conclusion**: Based on the analysis, histones are present in nucleosomes, which are the fundamental units of chromatin structure in eukaryotic cells.

5. **Final Answer**: The correct option is **C) Nucleosomes**.

---