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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The codon and anticodon are base-paired together during the process of translation. Which of the following is correct regarding the relationship between anticodon and codon?
A. The tRNA anticodon UCU pairs with the AGA mRNA codon.
B. The tRNA anticodon is read from the 5’ to the 3’ end.
C. A tRNA anticodon can pair with only one mRNA codon.
D. The mRNA codon ACG base pairs with the tRNA anticodon TGC.
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.
Which of the following statements about RNA processing in eukaryotes is INCORRECT?
A. The excision of introns from pre-mRNA is the only modification required to produce a mature mRNA.
B. A protein/RNA complex is used to remove introns from the pre-mRNA.
C. A poly A tail is added on to the 3′ end of the mRNA.
D. A 7-methylguanosine cap is added on to the 5′end of the mRNA.
E. Modification occurs in the nucleus.
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
- Which of the following statements are true about eukaryotic mRNA?a. The sigma factor is essential for the correct initiationof transcription.b. Processing of the nascent mRNA may begin beforeits transcription is complete.c. Processing takes place in the cytoplasm.d. Termination is accomplished by the use of a hairpinloop or the use of the rho factor.e. Many RNAs can be transcribed simultaneously fromone DNA templatearrow_forwardA principle function of 5' and 3' end modifications of eukaryotic mRNA is: a. to ensure that all nucleotides are phosphorylated b. to protect RNA from nucleolytic degradation c. to guide the removal of introns d. to serve as binding sites for translation release factorsarrow_forwardA scientist mutates eIF-2 to eliminate its GTP hydrolysis capability. How would this mutated form of eIF-2 alter translation? a. Initiation factors would not be able to bind to mRNA. b. The large ribosomal subunit would not be able to interact with mRNA transcripts. c. tRNAi-Met would not scan mRNA transcripts for the start codon. d. eIF-2 would not be able to interact with the small ribosomal subunit.arrow_forward
- Which of the following statements is INCORRECT? a. In simultaneous transcription of mRNA, many messenger RNA may be transcribed from different DNA strand happening all at once. b. All of the following statements are incorrect c. A poly A - tail is added at the end of the 3’ base. d. In eukaryotic cells, messenger RNA must exit the nucleus and enter the cytoplasmarrow_forwardWhich of the following best describes the initiation of translation? A. The mRNA binds the large ribosomal subunit. The start codon is identified and an rRNA with methionine is bound to the start codon. B. The mRNA binds the small ribosomal subunit. The start codon is identified and the large subunit is recruited. C. The mRNA binds the small ribosomal subunit. The start codon is identified and a tRNA with methionine is bound to the start codon. D. The mRNA binds the small ribosomal subunit. The start codon is identified and the tRNA with methionine enters the A site.arrow_forwardWhy might a single base-pair mutation in eukaryotic mRNA be less serious than one in prokaryotic mRNA? a. If the mutation occurs in the 5' end of the start site, it will not affect the gene product. b. If the mutation occurs in the exon, it will not affect the gene product. c. If the mutation occurs in the splice site of a transcript with alternative splicing, only one gene product may affected. O d. If the mutation occurs in the intron or not in the splice site of a transcript with alternative splicing, it will nc affect the gene product. O e. If the mutation occurs in the 3' end of the start site, it will not affect the gene product. OLIE STIC N 1Aarrow_forward
- Which of the following is true for both prokaryotic and eukaryotic gene expression? A. After transcription, a 3' poly-A tail and a 5' cap are added to MRNA. B. Translation of MRNA can begin before transcription is complete. C. RNA polymerase binds to the promoter region to begin transcription. D. MRNA is synthesized in the 3' → 5' direction.arrow_forwardDuring 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 abovearrow_forwardA geneticist induces a mutation in eukaryote cells. The mutation results in an inability to form the poly(A) tail during processing of pre-mRNA. What does this mean for the mature mRNA and what will be the effect on these cells? Possible Answers: A. The mRNA will be spliced, but will not have a 5' cap. B. The mRNA will likely be degraded. C. The mRNA will not be cleaved. D. The mRNA will have too many Gs and Cs.arrow_forward
- According to the adaptor hypothesis, is each the following statementstrue or false?A. The sequence of an anticodon in a tRNA directly recognizes acodon sequence in mRNA, with some allowance for wobble.B. The amino acid attached to the tRNA directly recognizes acodon sequence in mRNA.C. The amino acid attached to the tRNA affects the binding of thetRNA to a codon sequence in mRNA.arrow_forwardDuring 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…arrow_forwardTranscription in prokaryotes produces mRNA that is ready to translate, while in eukaryotes the RNA must be processed by... A. Adding a 5' cap, which is a version of a guanine nucleotide B. Adding a 3' poly A tail, which is a series of adenosines C. Removing introns D. A and B E. A, B, and Carrow_forward
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