Which of the following statements about eukaryotic RNA is true?

Question

Quizplus · Accepted Answer

Exons are transcribed from DNA to RNA and are then spliced together by the spliceosome to form the final mRNA molecule for protein synthesis.

Answer: C
 A cap of extra nucleotides, typically consisting of a methylated guanine residue, is added to the 5' end of eukaryotic mRNA to facilitate translation initiation. A poly-A tail is added to the 3' end of the mRNA to stabilize it and enhance translation efficiency.

Answer: A
 Introns are transcribed from DNA to RNA along with exons, but they are subsequently spliced out of the pre-mRNA molecule by the spliceosome, leaving only the exons to form the mature mRNA for translation.

Answer: D
 Eukaryotic pre-mRNA is processed and modified in the nucleus before being transported to the cytoplasm for translation. Some modifications include 5' capping, polyadenylation, and intron splicing. The mature mRNA is then transported into the cytoplasm for translation.

Which of the Following Statements About Eukaryotic RNA Is True