Splicing is necessary for preparing a mature transcript and its movement to cytoplasm. It requires.

Options

A. scRNA and proteins
B. snRNA and proteins
C. scRNA and snRNA
D. scRNA only

Answer

### Step-by-Step Solution:

1. **Understanding Splicing**:
- Splicing is a crucial process in eukaryotic cells where introns (non-coding regions) are removed from the pre-mRNA transcript. This process is essential for the formation of a mature mRNA molecule, which consists only of exons (coding regions).

2. **Components Required for Splicing**:
- The splicing process requires specific components, primarily small nuclear RNA (snRNA) and proteins. Together, these components form a complex known as the spliceosome, which facilitates the removal of introns and the joining of exons.

3. **Identifying the Correct Answer**:
- The question asks what is required for splicing. The correct answer is small nuclear RNA (snRNA) and proteins. This combination is essential for the splicing mechanism to occur effectively.

4. **Eliminating Incorrect Options**:
- Other options mentioned, such as SC RNA (small conditional RNA), are not involved in the splicing process. Therefore, they can be ruled out as incorrect answers.

5. **Conclusion**:
- The correct answer to the question is that splicing requires small nuclear RNA (snRNA) and proteins.

### Final Answer:
Splicing is necessary for preparing a mature transcript and its movement to the cytoplasm. It requires small nuclear RNA (snRNA) and proteins.

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