Question

Which of the following is a difference between prokaryotic and eukaryotic gene expression

Group of answer choices

1)Eukaryotes have basal transcription factors not part of the holoenzyme

2)Eukaryotes produce an immature mRNA

3)Trancription and translation can occur simultaneously in Prok.

4)Eukaryotics have more diverse promoters

5)All of the above

Answer 1

Answer:

5) All of the above

Explanation:

In prokaryotes the RNA polymerase is a holoenzyme with five core subunits (​​) and one factor. subunit helps the RNA polymerase to recognize and bind in the promoter region. But in eukaryotes RNA polymerase requires lots of basal transcription factors or general transcription factors (GTFs) to recognize and bind in the promoter region which are not part of the holoenzyme. So, option ‘A’ is correct.

After elongation phase in eukaryotes the newly formed mRNA is known as pre mRNA or pre-mature mRNA which needs some modification to become fully matured mRNA transcript to exit the nucleus. So, option ‘B’ is correct.

In prokaryotes transcription and translation can occur simultaneously whereas in eukaryotes transcription occurs first and then post-transcriptional modification is done and finally the mRNA comes out from the nucleus to the cytosol and then translation is taken placed. So, option ‘C’ is correct.

Eukaryotes have more diverse promoters than that of in prokaryotes. So, option ‘D’ is correct.

As, all the options ‘A’, ‘B’, ‘C’ and ‘D’ are correct. Thus, the option ‘E’, i.e., “all of the above” is correct.