Where does RNA polymerase bind during transcription?
A. |
Inducer |
|
B. |
Operator |
|
C. |
Start Codon |
|
D. |
Promoter |
Answer:
D.Promoter
The σ factor a subunit of RNA polymerase recognize and bind specifically to promoter regions.
Where does RNA polymerase bind during transcription? A. Inducer B. Operator C. Start Codon D. Promoter
1. How is the start codon identified in prokaryotic cells? a. It is the only AUG on the mRNA strand. b. It is the AUG after the Shine-Dalgarno sequence. c. It is the AUG right next to the promoter on the mRNA. d. It is the AUG after the Kozak sequence. e. It is the AUG nearest the 5' end of the mRNA. 2. All of the following are true for eukaryotic transcription EXCEPT: a. Transcription can be terminated when...
6:35 5 minutes ago 25) Which of the following turns off transcription by binding to the operator? A) repressons B) lactose C) RNA polymerase D) promoters E) enzymes 25) 26) In bacteria, what name is given to a cluster of genes with related functions, along with their control 26) A) exon B) operon C) promoter D) activator E) regulatory gene A mutant bacterial cell has a defective aminoacyl synthetase that attaches a lysine to tRNAs with the anticodon AAA instead...
Below is a diagram of a transcription unit and the mRNA made from the transcription unit: A H TTGACA DNA TATAAT -35 B -10 С D - Start codon Stop codon mRNA 5' 3' E F G Is this a prokaryotic or eukaryotic transcription unit? prokaryotic What is the name of the cofactor required for RNA polymerase to bind to the promoter? Which letters on the above diagram correspond to the following structures? Promoter Pribnow box Non-template strand Transcriptional start...
Below is a diagram of a transcription unit and the mRNA made from the transcription unit: А H DNA TTGACA TATAAT -35 B -10 C D Start codon Stop codon mRNA 5 E F G Is this a prokaryotic or eukaryotic transcription unit? What is the name of the cofactor required for RNA polymerase to bind to the promoter? Which letters on the above diagram correspond to the following structures? Promoters Pribnow box Non-template strand Transcriptional start site- Open Reading...
4. The antibiotic cordycenin syntheon 3. The RNA polymerase from bacteriophage T7 recognizes specific promoter sequence and melts open the DNA to form a transcription bubble. No other transcription factors are necessary for T7 RNA polymerase to initiate transcription. Dissociation constants (Ka) were measured for the interaction between the polymerase and DNA segments containing the promoter sequence. In some cases, the DNA contained a bulge, caused by a mismatch of one, four, or eight bases, to mimic the intermediates in...
One Question Below:
3. The RNA polymerase from bacteriophage T7 recognizes specific promoter sequence and melts open the DNA to form a transcription bubble. No other transcription factors are necessary for T7 RNA polymerase to initiate transcription. Dissociation constants (Ka) were measured for the interaction between the polymerase and DNA segments containing the promoter sequence. In some cases, the DNA contained a bulge, caused by a mismatch of one, four, or eight bases, to mimic the intermediates in the formation...
Choose all that apply to the initiation of transcription Promoter segments Ribosome tRNA DNA polymerase Transcription factors Question 25 (4 points) Saved Choose all the molecules that are used in transcription: a) primase b) DNA c) nucleotides d) RNA polymerase e) SSB (single strand binding protein)
25. What binds to a stop codon on a mRNA during translation? a. transcription factor c. termination factor b. tRNA d. transcription initiator 26. What is typically attached to the acceptor end of a tRNA? a. a protein b. an amino acid C a ribosome d. a nucleosome 27. During mRNA processing, what is put on the 3' end of a primary mRNA transcript? a. a poly-A tail b. a cap d. an intron c. an exon 28. Which of...
Problems 3. Does RNA polymerase stop transcribing when it comes to a stop codon? Explain. and gove RNA polymerase 4. A hypothetical gene contains 6 exons. (a) How many introns are in the gene? (b) Could the start codon be located in the second exon? Explain.
Which of the following statements is true? A. RNA polymerase has a proofreading activity B. Prokaryotic RNA usually undergoes nuclear processing C. Polypeptides are synthesized by addition of amino acids to the amino terminus. D. The 3' end of mRNA corresponds to the carboxyl terminus of the protein. Grade 2. Which of the following A. It may be autocatalytic. B. Spliceosomes are present in organelles and nuclei C. It involves removal of exons is true regarding RNA processing? D. It...