Which RNA carries information from DNA in protein synthesis

Options

A. s-RNA
B. t-RNA
C. r-RNA
D. m-RNA

Explanation

**Step-by-Step Solution:**

1. **Understanding the Types of RNA**: There are several types of RNA involved in protein synthesis: small RNA, tRNA (transfer RNA), rRNA (ribosomal RNA), and mRNA (messenger RNA). Each has a distinct role.

2. **Analyzing Small RNA**: Small RNA does not carry information from DNA. Instead, it binds to specific protein targets to regulate gene expression. Therefore, it is not the correct answer.

3. **Examining tRNA**: tRNA is responsible for transporting amino acids to the ribosome during the translation process, which is part of protein synthesis. However, tRNA does not carry the genetic information from DNA, so it is also not the correct answer.

4. **Considering rRNA**: Ribosomal RNA (rRNA) is a component of ribosomes, which are the sites of protein synthesis. While rRNA plays a crucial role in forming ribosomes, it does not carry information from DNA. Thus, it is not the correct answer.

5. **Identifying mRNA**: Messenger RNA (mRNA) is synthesized from DNA and carries the genetic information necessary for protein synthesis. It is produced during transcription, where the DNA sequence is copied into mRNA. During translation, mRNA is read by ribosomes to synthesize proteins.

6. **Conclusion**: The RNA that carries information from DNA in the process of protein synthesis is mRNA.

**Final Answer**: The RNA that carries information from DNA in protein synthesis is **mRNA**.

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