The elongation factors required for prokaryotes are

Options

A. EF-Tu and EF-Ts
B. `eEF_(1)`
C. `elF_(2)`
D. `eEF_(2)`

Answer

**Step-by-Step Solution:**

1. **Understanding the Context**: The question asks about the elongation factors required for prokaryotes during protein synthesis, specifically during the translation process.

2. **Identifying the Process**: Translation is the process where the polypeptide chain is formed. This involves the elongation of the amino acid chain.

3. **Role of Elongation Factors**: During translation, elongation factors are proteins that assist in the elongation phase. They help in the recruitment of aminoacyl-tRNA to the ribosome and ensure that the polypeptide chain is extended correctly.

4. **Recognizing Prokaryotic Elongation Factors**: In prokaryotes, the primary elongation factors are:
- **EF-Tu (Elongation Factor Thermo unstable)**: This factor is responsible for delivering the aminoacyl-tRNA to the ribosome.
- **EF-Ts (Elongation Factor Ts)**: This factor helps regenerate EF-Tu in its active form.

5. **Conclusion**: The elongation factors required for prokaryotes are EF-Tu and EF-Ts. Therefore, the correct answer to the question is option number one: elongation factor Tu and elongation factor Ts.

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