The subunits of ribosomes of a prokaryotic cell are

Options

A. 60S and40S
B. 20S and 90S
C. 50S and 30S
D. 30S and 30S

Answer

To answer the question about the subunits of ribosomes in a prokaryotic cell, we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Understanding Ribosomes**: Ribosomes are essential cellular structures responsible for protein synthesis. They are found in both prokaryotic and eukaryotic cells.

2. **Structure of Ribosomes**: Ribosomes consist of two subunits: a larger subunit and a smaller subunit. These subunits come together during protein synthesis.

3. **Ribosome Subunits in Prokaryotes**: In prokaryotic cells, ribosomes are classified as 70S. This means that the total sedimentation coefficient of the ribosome is 70S.

4. **Composition of Prokaryotic Ribosomes**: The 70S ribosome in prokaryotes is made up of two subunits:
- The larger subunit is 50S.
- The smaller subunit is 30S.

5. **Conclusion**: Therefore, the subunits of ribosomes in a prokaryotic cell are 50S and 30S.

### Final Answer:
The subunits of ribosomes of a prokaryotic cell are **50S and 30S**.

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