Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 13.6, Problem 1COMQ
During the initiation stage of translation in bacteria, which of the following events occur(s)?
a. IF1 and IF3 bind to the 30S subunit.
b. The mRNA binds to the 30S subunit and tRNAfMet binds to the start codon in the mRNA.
c. IF2 hydrolyzes its GTP and is released; the 50S subunit binds to the 30S subunit.
d. All of the above events occur.
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Which of the following statements best describes the initiation of translation?
A) The large and small ribosomal subunits scan the mRNA in the 3'–5' direction until the promoter is reached.
B) A tRNA with the anticodon, AUG, enters the ribosomal complex and binds to the mRNA at the A site.
C) The mRNA containing the start codon, AUG, sits at the P site and forms a complex with the corresponding tRNA, and the large and small ribosomal subunits.
D) The mRNA attaches to the large ribosomal subunit and once the start codon reaches the A site, the tRNA binds and the small subunit completes the complex.
When would a ribosome bind to a promoter sequence?
A) It wouldn't. A promoter is a DNA sequence, and ribosomes don't bind to DNA.
B) When the ribosome needs to transcribe the gene that that promoter controls.
C) When the ribosome is translating the DNA sequence of a gene.
D) When there is a start codon (AUG) in the promoter sequence.
.
During elongation (in transcription), RNA polymerase has three prominent channels, or grooves. These channels provide sites for all of the following EXCEPT ___.
A. A site for the entry of RNA nucleotides
B. A site for the growing RNA strand to exit
C. A site for the double-stranded DNA molecule it is transcribing
D. A site for the entry of amino acids
Chapter 13 Solutions
Genetics: Analysis and Principles
Ch. 13.1 - Prob. 1COMQCh. 13.1 - 2. The reason why Beadle and Tatum observed four...Ch. 13.2 - What is the genetic code? a. The relationship...Ch. 13.2 - Prob. 2COMQCh. 13.2 - The fourth codon in an mRNA sequence is GGG, which...Ch. 13.2 - Prob. 4COMQCh. 13.3 - Prob. 2COMQCh. 13.4 - Prob. 1COMQCh. 13.4 - 2. The anticodon of a tRNA is located in the
a....Ch. 13.4 - An enzyme known as _______attaches an amino acid...
Ch. 13.5 - Each ribosomal subunit is composed of a. multiple...Ch. 13.5 - Prob. 2COMQCh. 13.6 - 1. During the initiation stage of translation in...Ch. 13.6 - The Kozak rules determine a. the choice of the...Ch. 13.6 - During the peptidyl transfer reaction, the...Ch. 13.6 - A release factor is referred to as a molecular...Ch. 13 - Prob. 1CONQCh. 13 - What does it mean when we say that the genetic...Ch. 13 - According to the adaptor hypothesis, is each of...Ch. 13 - Prob. 4CONQCh. 13 - Prob. 5CONQCh. 13 - 6. The wobble rules for tRNA-mRNA pairing are...Ch. 13 - Prob. 7CONQCh. 13 - Prob. 8CONQCh. 13 - Prob. 9CONQCh. 13 - If a tRNA has an anticodon sequence 3CCI5, what...Ch. 13 - Describe the anticodon of a single tRNA that could...Ch. 13 - Prob. 12CONQCh. 13 - Prob. 13CONQCh. 13 - 14. What is the role of aminoacyl-tRNA synthetase?...Ch. 13 - Prob. 15CONQCh. 13 - 16. Discuss the significance of modified bases...Ch. 13 - How and when does formylmethionine become attached...Ch. 13 - Prob. 18CONQCh. 13 - Prob. 19CONQCh. 13 - Prob. 20CONQCh. 13 - The term subunit can be used in a variety of ways....Ch. 13 - 22. Do the following events during bacterial...Ch. 13 - 23. What are the three stages of translation?...Ch. 13 - Prob. 24CONQCh. 13 - 25. For each of the following initiation factors,...Ch. 13 - Prob. 26CONQCh. 13 - 27. For each of the following sequences, rank them...Ch. 13 - Prob. 28CONQCh. 13 - Prob. 29CONQCh. 13 - Prob. 30CONQCh. 13 - Prob. 31CONQCh. 13 - In which of the ribosomal sites, the A site, P...Ch. 13 - Prob. 33CONQCh. 13 - Prob. 34CONQCh. 13 - Prob. 35CONQCh. 13 - Prob. 36CONQCh. 13 - Prob. 37CONQCh. 13 - 1. In the experiment of Figure 13.7, what would be...Ch. 13 - 2. Polypeptides can be translated in vitro. Would...Ch. 13 - Discuss how the elucidation of the structure of...Ch. 13 - Describe the structure of a polysome, which is...Ch. 13 - Prob. 5EQCh. 13 - 6. The technique of Western blotting is described...Ch. 13 - The protein known as tyrosinase is needed to make...Ch. 13 - Prob. 8EQCh. 13 - Discuss why you think the ribosomes need to...Ch. 13 - 2. Discuss and make a list of the similarities...Ch. 13 - 3. Which events during translation involve...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
The primary function of RF1 during translation is to:
a.
recognize a stop codon in the 70S A site during termination.
b.
recognize the start codon in the 70S P site during initiation.
c.
move tRNAs and mRNA through the ribosome during elongation.
d.
facilitate binding of the ribosome to mRNA during initiation.
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What is one function of the 5' cap in eukaryotic mRNA?
Select one:
a.
It is involved in translation termination.
b.
It is an intron splicing signal.
c.
It is the initial attachment site for ribosomes.
d.
It is involved in polyadenylation of the 5' end of the mRNA
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The Kozak rules determine
a. the choice of the start codon in complex eukaryotes.
b. the choice of the start codon in bacteria.
c. the site in the mRNA where translation ends.
d. how fast the mRNA is translated.
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During transcription in eukaryotes, the 5' cap and poly-A tail function to:
A.
Protect mRNA from damage
B.
Help target the mRNA for translation
C.
A and B
D.
None of the above
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During translation, when a stop codon is read on the mRNA strand at the ribosome...
a
the mRNA is digested by a protease complex
b
a repressor attached to the ribosome that inhibits the movement of the ribosome along the mRNA
c
the enzyme helicase binds to terminate the polypeptide
d
a release factor enters the A site of the ribosome and stimulates the disassembly of the translation complex
Codons are...
a
triplets coding for a single amino acid.
b
redundant in their coding for various amino acids.
c
matched with anticodons during translation
d
triplets found on transfer RNA
Question 6 (1 point)
In order to produce many copies of the same protein in a short period of time, the cell uses...
a
intron self-splicing.
b
many RNA polymerase molecules to produce multiple mRNA transcripts at the same time.
c
single-unit ribosomes for high speed translation.
d
codon-anticodon reciprocal…
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1. Translation
a)Explain the role of ribosomes in the process of protein translation.b. Explain the role of tRNA molecules in protein translation.c. Define the following terms:1. codon 2. anticodon. Explain how a codon is used in the process of translation.
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At what point in gene expression do you think the process could be regulated?
Select all that apply:
a) Before transcription begins.
b) During the process of transcription.
c) During the process of translation.
d) After translation ends.
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Which of the following describes the effect of a frameshift mutations? *
A. all mRNA codons change
B. some, but not all , mRNA codons change
C. there is no change in mRNA codons
D. no correct response
Consider the following DNA base sequence 3' TTA ATA 5'. what dipeptide is formed if a DNA point mutation converts ATA to ATG? *
A. Cys-Phe
B. Tyr-Tyr
C. Phe-Leu
D. Ser-Tyr
Consider the following mRNA base sequence 5' ACC CAC 3', what dipeptide is formed if a point mutation converts ACC to ACU? *
A. Thr-His
B. Thr-Thr
C. His- Ile
D. Ile- Asp
Which of the following statements below is incorrect? *
A. the genetic code is overlapping
B. the genetic code is universal
C. degenerate codon specify the same amino acids…
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If we watched a eukaryotic cell initiate translation, one of the first things we would see is
a.
The small ribosomal subunit binding to the cap
b.
The formation of the 70s initiation complex
c.
The small ribosomal subunit binding to the Shine-Dalgarno sequence
d.
The formation of the 80s initiation complex
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What happens immediately after the initiation complex forms during translation?
(a) peptide bond formation (b) the DNA associated with the promoter unwinds (c) the small and large subunits of the ribosome come together (d) primers are formed (e) phosphodiester bond formation
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Which sequence is most likely to be found in a promoter?
a) CGGTGTATATCGTAC
b) GTACAGTCATCCCGT
c) AAATCTACTACGATT
d) GGGTTGGGTTGGGTT
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During translation, ____________ is the step in which new t-RNA is attracted to the ribosome
(a) the formation of the open promoter complex (b) codon recognition (c) peptide bond formation (d) translocation (e) none of the above
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