Nester's Microbiology: A Human Perspective
9th Edition
ISBN: 9781259709999
Author: Denise G. Anderson Lecturer, Sarah Salm, Deborah Allen
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 7, Problem 5MC
A ribosome binds to the following mRNA at the site indicated by the dark box. At which codon will translation most likely begin?
5' ■ GCCGGAAUGC UGC UGGC
a) GCC
b) GGC
c) AUG
d) AAU
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Which of the following are stages of translation? Select all that apply.
---A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine.
---When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released.
---As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide.
---The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.
---Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA.
UAA is a stop codon. Why does the UAA sequence in the segment of mRNA 5′-G-C-A-U-G-G-A-C-C-C-C-G-U-U-A-U-U-A-A-A-C-A-C-3′not cause protein synthesis to stop?
How does the ribosome verify correct tRNA–mRNA pairing?
Chapter 7 Solutions
Nester's Microbiology: A Human Perspective
Ch. 7 - Explain what semiconservative means with respect...Ch. 7 -
2. What is an origin of replication?
Ch. 7 - Why are primers required in DNA replication but...Ch. 7 -
4. What is polycistronic mRNA?
Ch. 7 -
5. Explain why knowing the orientation of a...Ch. 7 - What is the function of a sigma factor?Ch. 7 - Prob. 7SACh. 7 - Explain how some bacteria sense the density of...Ch. 7 -
9. Compare and contrast regulation by a repressor...Ch. 7 - Prob. 10SA
Ch. 7 - All of the following are involved in transcription...Ch. 7 -
2. All of the following are involved in DNA...Ch. 7 - All of the following are directly involved in...Ch. 7 - Using the DNA strand shown here as a template,...Ch. 7 -
5. A ribosome binds to the following mRNA at the...Ch. 7 - Which of the following statements about gene...Ch. 7 -
7. An enzyme used to synthesize the amino acid...Ch. 7 -
8. Under which of the following conditions will...Ch. 7 -
9. All of the following are characteristics of...Ch. 7 - Which of the following statements is false? a) A...Ch. 7 - A graduate student is trying to identity the gene...Ch. 7 - To isolate eukaryotic mRNA from cell lysates, a...Ch. 7 - Prob. 1CTCh. 7 -
2. In a variation of the experiment in the...
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- If a strand of mRNA contains the sequence, UAG CUA UCA AAU AGA, what tRNA anticodons would be needed to translate the sequence?arrow_forwardHow does the ribosome know where to start translating?arrow_forwardThe template strand of a double helical segment of DNA consists of the following sequence: 5’-GTAGCCTTAAGCGATCACCGTCCGTATTACTAGTGGCCAGACTCTTTTCACTCTCATGTATAGTTG-3’ What is the nucleotide order in the complementary mRNA that can be transcribed from the given DNA strand?arrow_forward
- The template strand of a double helical segment of DNA consists of the following sequence: 5’-GTAGCCTTAAGCGATCACCGTCCGTATTACTAGTGGCCAGACTCTTTTCACTCTCATGTATAGTTG-3’ What will be the overall anti-codon sequence in tRNA?arrow_forwardThe template strand of a double helical segment of DNA consists of the following sequence: 5’-GTAGCCTTAAGCGATCACCGTCCGTATTACTAGTGGCCAGACTCTTTTCACTCTCATGTATAGTTG-3’ Following translation process, what is the amino acid sequence that will be coded for? (show your answer using THREE-letter amino acid code starting from N-terminus to C-terminus)arrow_forwardThe template strand of a double helical segment of DNA consists of the following sequence: 5’-GTAGCCTTAAGCGATCACCGTCCGTATTACTAGTGGCCAGACTCTTTTCACTCTCATGTATAGTTG-3’ Following translation process, what is the amino acid sequence that will be coded for? (show your answer using ONE-letter amino acid code starting from N-terminus to C-terminus)arrow_forward
- Amino acids are brought to the site of translation by what molecule? Where in the cell does translation occur?arrow_forwardWhat is mRNA converted into during the process of translation? Where in the cell does this take place?arrow_forwardGiven the mRNA sequence ,5’-AUGUACAAGGUCGGAUGA-3’ which of the following amino acid sequence would result from translation? Tyr-met-val-lys-gly Met-val-lys-tyr-gly Met-tyr-lys-val-gly Ser-arg-leu-glu-his-val Gly-met-val-lys-tyrarrow_forward
- A ribosome binds to the following mRNA at the site indicatedby the dark box. At which codon will translation begin?5′ ■ GCCGGAAUGCUGCUGGCa) GCC b) GGCc) AUG d) AAUarrow_forwardThe process of translation involves three distinct phases: initiation, elongation, and termination. Which of the following is an accurate statement of a molecular event that occurs during one of the phases? A. All phases of translation require the energy of ATP to fuel molecular processes. B. The first components to assemble in initiation are the large ribosomal subunit, mRNA, and the initiator tRNA molecule. C. A peptide bond forms between the new amino acid and the amino acid at the C-terminus of the growing polypeptide chain. D. Amino acids are added to the polypeptide chain that sits in the A site of the translation initiation complex.arrow_forwardHow many amino acids will the mRNA sequence "AUG GAC CUG UCG UGA" produce?arrow_forward
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