Question

Which pre-mRNA processing step is important for initiating translation?

a) 5' capping
b) Polyadenylation
c) Splicing
d) Promoter recognition

Answer 1

The pre-mRNA processing step that is important for initiating translation is 5' capping.

Step-by-step explanation:

The pre-mRNA processing step that is important for initiating translation is 5' capping. While the pre-mRNA is still being synthesized, a 7-methylguanosine cap is added to the 5' end of the growing transcript. This cap protects the mRNA from degradation and helps initiate translation by ribosomes.