Nucleoproteins are synthesized by

Options

A. SER
B. nucleplasm
C. nucleolus
D. r-RNA

Answer

**Step-by-Step Solution:**

1. **Understanding Nucleoproteins**: Nucleoproteins are complex molecules made up of nucleic acids (DNA or RNA) and proteins. They play crucial roles in various cellular processes, including the synthesis of proteins and the regulation of gene expression.

2. **Types of Nucleoproteins**: There are different types of nucleoproteins, such as ribonucleoproteins (like ribosomal RNA) and deoxyribonucleoproteins (like histone proteins). Each type has a specific site of synthesis within the cell.

3. **Synthesis of Ribosomal RNA**: Ribosomal RNA (rRNA), which is a type of ribonucleoprotein, is synthesized in the nucleolus, a specialized structure within the nucleus. The nucleolus is responsible for the production and assembly of rRNA and ribosomal subunits.

4. **Synthesis of Histone Proteins**: Histone proteins, which are associated with DNA and help in packaging it into a compact form, are synthesized in the cytosol (the fluid part of the cytoplasm) outside the nucleus.

5. **Conclusion**: Since the question does not specify which type of nucleoprotein is being referred to, the best answer is the nucleolus for ribosomal RNA synthesis. However, for histone proteins, the synthesis occurs in the cytosol. Therefore, the answer is context-dependent.

6. **Final Answer**: Nucleoproteins are synthesized by the nucleolus (for ribosomal RNA) and the cytosol (for histone proteins).

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