Activation of amino acid during protein synthesis along with ATP requires

Options

A. mRNA
B. tRNA
C. rRNA
D. snRNA

Answer

To solve the question regarding the activation of amino acids during protein synthesis, we need to analyze the options provided and understand the role of each type of RNA in the process of translation.

### Step-by-Step Solution:

1. **Understanding Protein Synthesis**:
- Protein synthesis involves two main processes: transcription and translation. During translation, amino acids are linked together to form proteins.

2. **Role of ATP in Activation**:
- The activation of amino acids is an essential step that requires energy, which is provided by ATP (adenosine triphosphate).

3. **Identifying the Types of RNA**:
- The question provides four types of RNA: mRNA, tRNA, rRNA, and snRNA. We need to determine which one is involved in the activation of amino acids.

4. **Analyzing Each Option**:
- **Option 1: mRNA (messenger RNA)**:
- mRNA carries the genetic code from DNA to the ribosome but does not activate amino acids. Therefore, this option is incorrect.
- **Option 2: tRNA (transfer RNA)**:
- tRNA is responsible for bringing amino acids to the ribosome during protein synthesis. It activates amino acids by attaching them to their corresponding tRNA molecules with the help of ATP. Thus, this option is correct.
- **Option 3: rRNA (ribosomal RNA)**:
- rRNA is a component of ribosomes and plays a structural role in protein synthesis but does not activate amino acids. Hence, this option is incorrect.
- **Option 4: snRNA (small nuclear RNA)**:
- snRNA is involved in the processing of pre-mRNA in the nucleus and does not play a role in amino acid activation. Therefore, this option is also incorrect.

5. **Conclusion**:
- The correct answer is **Option 2: tRNA**, as it is the molecule that activates amino acids during protein synthesis with the help of ATP.

### Final Answer:
**The activation of amino acid during protein synthesis along with ATP requires tRNA.**