Question

The fully processed hnRNA is called

• A. mRNA
• B. tRNA
• C. rRNA
• D. All of these

Answer 1

The correct option is A

mRNA

The correct option is A.

Explanation of correct option:

1. Heterogeneous nuclear RNA (hnRNA) refers to various types of RNAs which are found in the eukaryotic cell nucleus.
2. After certain modifications and processing, the heterogeneous nuclear RNA changes into the mature messenger RNA (mRNA) which has the inherent amino acid code for the protein synthesis.

Explanation of incorrect options:

Option B:

1. Transfer ribonucleic acid (tRNA) is the type of RNA molecule which helps decode the sequence of mRNA into a protein.
2. The tRNAs molecules brings the appropriate amino acids from the mRNA to the ribosome.

Option C:

1. During translation of mRNA, rRNA molecules bind mRNA and tRNA together to help the process of translating mRNA's codon sequence into amino acids

Option D:

1. mRNA is the fully processed hnRNA containing the inherent amino acid code, rRNA and tRNA helps in translating that code to provide that information to the ribosomes for protein synthesis.

Final answer: The fully processed hnRNA is called mRNA.