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 2COMQ
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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Which of the following statements are accurate descriptions of the genetic code? MARK ALL THAT APPLY
Select one or more:
a. The genetic code is made up of triplet nucleotides that specify an amino acid.
b. The genetic code is unambiguous because codons only specific a single amino acid.
C. The genetic code is read in an overlapping manner.
d. The genetic code is redundant because a single codon can specify more than one amino acid.
e. Some amino acids are encoded by more than one codon.
f. All codons of the genetic code specify amino acids.
Which of the following is TRUE in translation?
A. Amino acyl TRNA containing one amino acid is attached to the P site
B. Amino acids/peptides attached to the amino acyl tRNA at the P site are
transferred to amino acids at the A site, followed by translocation.
C. Empty TRNAS are immediately released from the ribosomes
D. The E site is always empty after translocation to receive incoming empty
TRNAS.
E. The anticodon binding to the codon is stringent, i.e. there must be
complete complementary base-pairing between the bases in the codon and
anticodon before translation can proceed.
For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Specifies the order of amino acids in a protein, using a series of three-base codons, where different amino acids are specified by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.
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
- Define the following terms: a. guanine nucleotide exchange factor (GEF) b. pretranslocation state c. posttranslocation state d. nascent polypeptide e. releasing factorsarrow_forwardDefine the following terms as they apply to the genetic code: a. Reading frame b. Overlapping code c. Nonoverlapping code d. Initiation codon e. Termination codon f. Sense codon g. Nonsense codon h. Universal code i. Nonuniversal codons 6. How is the reading frame of a nucleotide sequence set?arrow_forwardConsider the following portion of mRNA produced by the normal order of DNA nucleotides: 5’ – CUU AAA CCA GUU – 3’ a. What is the template DNA sequence that was used to synthesize this portion of mRNA? b. What is the amino acid order produced from this mRNA? c. Write the amino acid sequence if a mutation changes CUU to CAU. Is this likely to affect protein function?arrow_forward
- Which of the following are stages of translation? Select all that apply. a.As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. b.A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. c.When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. d.Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. e.The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.arrow_forwardWhich of the following are stages of translation? Select all that apply. A. A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. B. As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. C. When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. D. Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. E. The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.arrow_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_forward
- The degeneracy of the Genetic code is due to A. a 1 to 1 correlation between single amino acids and single nucleotides B. The fact that tRNAs can bind to mRNAs at the same time they transfer amino acids to a growing polypeptide chain C. The fact that there is only one start codon D. The fact that the code is non-overlapping E. The fact that more than one codon specifying an amino acid F. None of the abovearrow_forwardWhich of the following statements is/are TRUE about the difference between prokaryotic and eukaryotic translations? A. The chain elongation step is the most different process. B. Eukaryotes have less elongation factors than in prokaryotes. C. The release factors in prokaryotes can bind to all three stop codons. D. The fMet and Met are the 1st amino acid in prokaryotes and eukaryotes, respectively.arrow_forwardThe 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.arrow_forward
- Define the following terms: a. peptidyl transferase center b. GTPase associated region c. 70S bacterial ribosome d. decoding center e. Shine–Dalgarno sequencearrow_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_forwardThere are 61 mRNA codons that specify an amino acid, but only 45 tRNAs. This is best explained by the fact that A. some tRNAs have anticodons that recognize two or more different codons. B. the rules for base pairing between the third base of a codon and tRNA are flexible. C. many codons are never used, so the tRNAs that recognize them are dispensable. D. A and B only E. A, B, and Carrow_forward
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