Exam 5: RNA: Transcription and Rna Processing

If the DNA strand which is complementary to the strand of DNA which is transcribed into RNA has the following base sequence A G C T C A C T G The RNA transcribed would have which of the following sequences?

Small nuclear RNAs such as U1, U2 and U5 affect gene expression by

During RNA synthesis:

Which of the following statements are true only for eukaryotic transcription and processing of mRNA but not for prokaryotic? (1) transcription is regulated by the binding of proteins to specific DNA sequences upstream of the gene. (2) The RNA is terminated at the 5' end with a cap, consisting of 7-methylguanosine connected by a triphosphate bridge. (3) RNA polymerase locally melts the DNA strand and copies only the template strand. (4) Non_coding regions of the RNA transcript are spliced out. (5) The 3'_terminus of the RNA consists of a long string of A residues (poly A) which are added posttranscriptionally.

All of the following are known to be typical modifications of RNA after transcription EXCEPT

Which of the following statements about rRNA is correct?

Transcriptionally poised chromatin:

Rifampicin inhibits

The CAPPED 5' end of eukaryotic mRNA

RNA polymerases in eukaryotic cells

Many eukaryotic and some prokaryotic genes have their coding regions interrupted by introns (intervening sequences). These intronic sequences are removed

Transcriptional activator proteins function in the regulation of eukaryotic gene expression by:

All of the following are true EXCEPT which one?

Which one of the following statements is true about eukaryotic RNA polymerases?

Splicing of pre-mRNA introns is accomplished by:

All of the following statements about the RNA polymerase are true EXCEPT which one?

Which of the following is a correct statement about the process of transcription?

The following statements are true for all known DNA polymerases. For RNA polymerases, all of the statements are true EXCEPT

During mRNA processing, splicing reactions are initiated in the branch site by which reactive group?

In eukaryotes, RNA polymerase II