In what way is eukaryotic transcription more complex than prokaryotic transcription?
a. eukaryotes have three different rna polymerases, whereas porkaryotes only have one rna polymerase.
b. eukaryotic transcription initiation is much more complex than prokaryotic initiation because of the various transcription factors involved
c. upstream elements are required for efficient transcription in eukaryotic cells, but these elements are not usually necessary in prokaryotes.
d. eukaryotic mrna is made in the nucleus
e. all of the above statements outline ways that eukaryotic transcription is more complex