Which of the following are the functions of RNA

Options

A. It is a carrier of genetic information from DNA to ribosomes synthesising polypep- tides
B. It carries amino acids to ribosomes
C. It is a constituent component of ribo- somes
D. All of the above

Answer

To answer the question regarding the functions of RNA, we can break down the functions into specific categories based on the types of RNA involved in the processes of transcription and translation.

### Step-by-Step Solution:

1. **Understanding RNA Types**:
- There are three main types of RNA: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). Each type has a specific function in the process of protein synthesis.

2. **Function of mRNA**:
- mRNA is synthesized from DNA during the process called transcription. It carries the genetic information from the DNA to the ribosomes, where proteins are synthesized. This makes mRNA crucial for the transfer of genetic information.

3. **Function of tRNA**:
- tRNA is responsible for transporting amino acids to the ribosome during translation. Each tRNA molecule has an anticodon that pairs with the corresponding codon on the mRNA, ensuring that the correct amino acid is added to the growing polypeptide chain.

4. **Function of rRNA**:
- rRNA is a structural component of ribosomes. Ribosomes are made up of rRNA and proteins, and they facilitate the translation of mRNA into proteins. rRNA plays a critical role in the assembly of amino acids into polypeptides.

5. **Conclusion**:
- All the functions mentioned above are essential roles of RNA in the process of protein synthesis. Therefore, the correct answer to the question is that all of the options listed are functions of RNA.

### Final Answer:
**D. All of the above** are functions of RNA.

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