What protects mRNA from attack by cellular enzymes?
A)RNA splicing
B)the removal of exons
C)the lack of RNA-digesting enzymes in the cytoplasm
D)a cap and tail

Question

Quizplus · Accepted Answer

A cap and tail protect mRNA from attack by cellular enzymes. The cap is a modified guanine nucleotide added to the 5' end of mRNA, while the tail is a string of adenine nucleotides added to the 3' end. These modifications prevent enzymes from degrading the mRNA, allowing it to be translated into protein. RNA splicing and the removal of exons are processes that occur within the mRNA molecule itself but do not protect it from enzymatic degradation. There are RNA-digesting enzymes in the cytoplasm, so the lack of such enzymes is not a viable option.

What Protects MRNA from Attack by Cellular Enzymes