Question

Export of RNA from the nucleus requires the RNA to have which characteristic(s)?

A. 5′ cap

B. poly-A tail

C. 5′ cap and poly-A tail

D. introns

Answer 1

Export of RNA from the nucleus requires the RNA to have a 5' cap and a poly-A tail.

Step-by-step explanation:

The export of RNA from the nucleus requires the RNA to have a 5' cap and a poly-A tail.

The 5' cap is a modified guanosine cap added to the 5' end of the mRNA during its synthesis. It protects the mRNA from degradation and helps initiate translation by ribosomes.

The poly-A tail is a string of approximately 200 adenine residues added to the 3' end of the mRNA. It further protects the mRNA from degradation and signals the export of the mRNA from the nucleus.