A "5′ cap":
A) prevents translation.
B) prevents the binding of ribosomes.
C) marks the mRNA for degradation.
D) is added to mRNA but not pre-mRNA.
E) protects mRNA from degradation.

Question

Quizplus · Accepted Answer

The 5′ cap is a modification added to the 5′ end of pre-mRNAs in eukaryotes, which protects the nascent mRNA from degradation and assists in ribosome binding during translation, thereby not preventing translation but facilitating it.

A "5′ Cap