Ribonucleoprotein particles found in a cell are

Options

A. Ribosomes
B. Mesosomes
C. Glyoxysomes
D. All

Answer

**Step-by-Step Solution:**

1. **Understanding Ribonucleoprotein Particles:**
- Ribonucleoprotein particles (RNPs) are complexes formed by the association of RNA and proteins. They play crucial roles in various cellular processes.

2. **Functions of Ribonucleoprotein Particles:**
- RNPs are involved in critical cellular functions such as translation (the process of synthesizing proteins from mRNA), transcription (the process of copying DNA into RNA), and gene expression regulation.

3. **Identifying the Location of Ribonucleoprotein Particles:**
- One of the primary locations where ribonucleoprotein particles are found is in ribosomes. Ribosomes are the cellular machinery responsible for protein synthesis and are composed of ribosomal RNA (rRNA) and proteins.

4. **Conclusion:**
- Since ribosomes are composed of RNA and proteins, they are classified as ribonucleoprotein particles. Therefore, the answer to the question is that ribonucleoprotein particles found in a cell are ribosomes.

**Final Answer:**
- The ribonucleoprotein particles found in a cell are ribosomes.

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