Before the messenger ribonucleic acid (mRNA) transcript in eukaryotic cells is ready to be used in protein synthesis, which of the following occurs?

Question

A chemical cap and tail are added to the beginning and end of the mRNA.

It binds to additional mRNA molecules to make a complex.

It is broken into pieces and degraded.

It is coiled around proteins.

Answer 1

Before the messenger ribonucleic acid (mRNA) transcript in eukaryotic cells is ready to be used in protein synthesis, the correct answer is:

A chemical cap and tail are added to the beginning and end of the mRNA.

In eukaryotic cells, mRNA undergoes several modifications after transcription, including the addition of a 5' cap (a modified guanine nucleotide) at the beginning and a poly-A tail (a sequence of adenine nucleotides) at the end. These modifications help protect the mRNA from degradation, assist in the export of the mRNA from the nucleus, and facilitate the initiation of translation.