Question

Which of the following statements about eukaryotic RNA is correct? A. Eukaryotic RNA is capped at...

Which of the following statements about eukaryotic RNA is correct?

A. Eukaryotic RNA is capped at its 3' end.

B. Eukaryote transcript splicing allows for subtle regulation of gene activity.

C. A primary eukaryotic transcript can only encode for one protein.

D. Processing of the RNA can only occur after termination.

E. Eukaryotic RNA is polyadenylated at its 5' end.

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Answer #1

Eukaryotic mRNA has a 5' cap and 3' poly-A tail. So, A is not correct.

Splicing of eukaryotic pre-mRNA produces final mRNA which can code for protein. But, alternative splicing produces different mRNA which can lead to subtle regulation of gene activity. So, B is correct.

A primary eukaryotic transcript can code for different proteins which are possible due to alternative splicing. So, C is also not correct.

Processing of the RNA can start simultaneously while transcription is still happening like 5' capping. So, D is also not true.

Eukaryotic RNA is polyadenylated at its 3' end. So, E is not correct.

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