Before messenger RNA is mature,
A) all exons are deleted and removed.
B) a cap and a tail are provided.
C) anticodons are assembled.
D) the transfer RNA transfers the messenger RNA to the ribosome.
E) the single RNA strand duplicates itself in much the same way as DNA.

Question

Quizplus · Accepted Answer

Before messenger RNA is mature, a cap (methylated Guanine) is added to the 5' end and a poly-A tail (a sequence of adenine nucleotides) is added to the 3' end. These modifications protect the RNA from degradation and aid in its transport out of the nucleus. No exons are deleted and removed, and there is no assembly of anticodons during mRNA maturation. Transfer RNA (tRNA) does not transfer mRNA to the ribosome, rather it brings amino acids to the ribosome during translation. mRNA does not duplicate itself, it is transcribed from DNA.

Before Messenger RNA Is Mature