Question

The function of mRNA is to

• A. Provide specific binding sites for a series of specific t-RNA molecules
• B. Hold a group of ribosomes together
• C. Transfer the genetic code to ribosomal RNA
• D. Transfer the genetic code to DNA

Answer 1

The correct option is A

Provide specific binding sites for a series of specific t-RNA molecules

The correct option is A:

Explanation of the correct option:

1. The mRNA aids in the transport of information from the DNA to synthesize proteins.
2. The process of converting DNA to mRNA is known as transcription, and the process of synthesizing protein using mRNA as a template is known as translation.
3. As one side of the tRNA binds to the amino acid and the other to the mRNA, mRNA provides specific binding sites for a series of specific tRNA molecules.

Explanation of the incorrect option:

Option B:

A polysome is a group of ribosomes held together by a strand of messenger RNA that each of them is translating.

Option C:

Messenger RNA (mRNA) molecules, also known as transcripts, carry the coding sequences for protein synthesis.

Option D:

Transcription is the transfer of genetic code from a DNA molecule.

Final answer:

The function of mRNA is to provide a specific binding site for the series of specific tRNA molecules.