Polyribosomes .
protect the mRNA from degradation
increase the rate of polypeptide synthesis from a single mRNA
allow coupled transcription and translation
increase the rate of transcription

B. Increase the rate of polypeptide synthesis from a single mRNA.

Hope this helped.

this process is called "phosphorylation." a phosphate bond joins adenosine diphosphate to form adenosine triphosphate.

satellites are frequently used to make observations of the orbit on earth