U RA synthesized by primase remains base-paired to the DNA template 9. anscripti
ID: 132311 • Letter: U
Question
U RA synthesized by primase remains base-paired to the DNA template 9. anscription in bacteria differs from transcription in a eukaryotic cell in that RNA polymerase (along with its sigma subunit) requires the general RNA polymerase (along with its sigma subunit) can initiate transcription on its actors to assemble at the promoter before polymerase can mRNAs. begin must associate with the appropriate type of RNA polymerase in order to produce ase must be phosphorylated at its C-terminal tail in order for transcription to proceed. d) RNA po?ymer of the following does not occur before a eukaryotic mRNA is exported from the nucleus? The ribosome binds to the mRNA. The mRNA is polyadenylated at its 3 end. methyl-G is added in a 5' to 5 linkage to the mRNA RNA polymerase dissociates. d) 11. Total nucleic acids are extracted from a culture of yeast celis and are then mixed with resin beads to which the polynucleotide 5-TTTTTTTTTTTTTTTTTTTTTTTTT-3' has been covalently attached. After a short incubation, the beads are then extracted from the mixture. When you analyze the cellular nucleic acids that have stuck to the beads, which of the following is most abundant? a) DNA b) tRNA c) rRNA 0 RAIA that can lo 12. Which of the following statements about RNA splicing is false? a) Introns are not found in prokaryotic genes. b) In order for a gene to function properly, exons must be removed from the primary transcript. c) Small ribonucleoproteins in the spliceosome carry out the splicing reactions necessary for the removal d) Splicing occurs after the 5' cap has been added to the end of the primary transcript. of non-self-splicing introns. 13. A fragment of human DNA containing the gene for a protein hormone with its regulatory regions removed is introduced into bacteria for overproduction. Although transcription of this gene occurs at normal levels, no protein is made. When this RNA is extracted and examined by electron microscopy, you see the following structure. Which of the statements below is inconsistent with your results? a) The human DNA was inserted in the bacterial DNA next to a bacterial promoter and in ts normal b) c) The human DNA contained an intron. orientation. The human DNA was inserted in the bacterial DNA next to a bacterial promoter but in an opposite orientation (compared to the normal orientation) d) The human DNA underwent a deletion while in the bacterium. tRNA and rRNA genes in some bacteria. However, some bacterial This is a generalization. In fact, introns can be present in protein-coding genes have been lound to have introns! Reference: Tourasse NJ, Stabell F n ll introns in bactería of the Bacillus cereus group. J Bacteriol 187(15)5437-5451Explanation / Answer
Ans 9...a
A is the correct answer.the difference in bacteria and in eukaryotic cells that rNA polymerase along with its sigma subunit can initiate transcription on its own.
Ans 10..a..
In eukaryotic cells ribosomes bind to the rNa in cytoplasm that is when it comes out of the nucleus.
Ans 11...d...mRNA
Is the correct ans
It is the only type of RNA that can do polymerisation
Ans 12...B
B is incorrect statement.for proper functioning introns are removed and not the exons ..introns are removed and exons are joined together.
Ans 13..a..
The result we have here is a failed experiment which probably may fail because of the other option given.if the DNA is Incorporated as in option A then protein will be produced.this line is inconsistent with observation in question
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.