Which of the following subunit of ribosome is ribosome is composed of 23S rRNA and a 5S rRNA +32 different proteins
" " Or
The largest subunit of prokaryotic ribosomes is

Options

A. 30 S
B. 40 S
C. 50 S
D. 60 S

Answer

To answer the question regarding which subunit of the ribosome is composed of 23S rRNA, 5S rRNA, and 32 different proteins, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ribosome Structure**:
- Ribosomes are composed of two major subunits: a larger subunit and a smaller subunit. In prokaryotes, these are referred to as the 50S (larger) and 30S (smaller) subunits, while in eukaryotes, they are 60S (larger) and 40S (smaller).

2. **Identifying the Components of the Prokaryotic Ribosome**:
- The larger subunit of prokaryotic ribosomes (50S) is made up of:
- 23S rRNA
- 5S rRNA
- Approximately 32 different proteins.

3. **Confirming the Composition**:
- The question specifically mentions the presence of 23S rRNA and 5S rRNA along with 32 proteins, which matches the composition of the 50S subunit in prokaryotic ribosomes.

4. **Conclusion**:
- Therefore, the correct answer to the question is that the largest subunit of prokaryotic ribosomes is the **50S subunit**.

### Final Answer:
The largest subunit of prokaryotic ribosomes is the **50S subunit**, which is composed of 23S rRNA, 5S rRNA, and approximately 32 different proteins.

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