Question

place the steps of eukaryotic transcription in order of occurrence.
rna polymerase ii binds dna promoter element.
dna is unzipped by rna polymerase.
ribonucleotides align with complementary dna nucleotides.
guanylyltransferase adds a guanine cap to the 5 end of the mrna.
rna polymerase links triphosphate ribonucleotides together.
splicing and polyadenylation events modify the mrna.
rna polymerase is released from dna.
processed mrna leaves the nucleus.
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Explanation:

Eukaryotic transcription proceeds in initiation, elongation, termination, and post-transcriptional modification steps. First, RNA polymerase II binds the promoter to start initiation. The DNA is then unzipped to expose the template strand. Ribonucleotides align with complementary DNA bases, then RNA polymerase links them to form the mRNA strand. Capping occurs early during elongation, followed by polymerase release at termination. Finally, the mRNA is spliced/polyadenylated and exits the nucleus.

Answer:

1. RNA polymerase II binds DNA promoter element.
2. DNA is unzipped by RNA polymerase.
3. Ribonucleotides align with complementary DNA nucleotides.
4. RNA polymerase links triphosphate ribonucleotides together.
5. Guanylyltransferase adds a guanine cap to the 5' end of the mRNA.
6. RNA polymerase is released from DNA.
7. Splicing and polyadenylation events modify the mRNA.
8. Processed mRNA leaves the nucleus.