RNA which carry amino acid from the cytoplasm to the ribosome is

Options

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

Answer

To solve the question "RNA which carry amino acid from the cytoplasm to the ribosome is," we will analyze the options provided and determine which type of RNA fulfills this function.

### Step-by-Step Solution:

1. **Identify the Types of RNA**:
- The question provides four types of RNA: mRNA (messenger RNA), tRNA (transfer RNA), rRNA (ribosomal RNA), and cRNA (complementary RNA).

2. **Understand the Function of Each RNA**:
- **mRNA (Messenger RNA)**: This type of RNA carries the genetic information from DNA to the ribosome, where proteins are synthesized. It contains the coding sequences for protein synthesis.
- **tRNA (Transfer RNA)**: This type of RNA is responsible for transporting amino acids from the cytoplasm to the ribosome during protein synthesis. It plays a crucial role in translating the mRNA sequence into a polypeptide chain.
- **rRNA (Ribosomal RNA)**: This RNA is a structural component of ribosomes. It helps in the assembly of amino acids into proteins but does not carry amino acids itself.
- **cRNA (Complementary RNA)**: This type of RNA is not commonly referenced in the context of protein synthesis and does not have a specific function related to carrying amino acids.

3. **Determine the Correct Answer**:
- Based on the functions described, the RNA that specifically carries amino acids from the cytoplasm to the ribosome is **tRNA (transfer RNA)**.

4. **Conclusion**:
- Therefore, the correct answer to the question is **tRNA**.

### Final Answer:
The RNA which carries amino acids from the cytoplasm to the ribosome is **tRNA (transfer RNA)**.