ermination of translation occurs when the ribosome reaches one of _____ potential stop codons. At this point a ________ enters the ________ site of the ribosome and the polypeptide chain is terminated. a. 4; protein release factor; P b. 3; protein release factor; P c. 3; protein release factor; A d. 4; modified tRNA release factor; P e. 3; modified tRNA release factor; A f. 4; modified tRNA release factor; A

ermination of translation occurs when the ribosome reaches one of _ potential stop codons. At this point a enters the ____ site of the ribosome and the polypeptide chain is terminated. a. 4; protein release factor; P b. 3; protein release factor; P c. 3; protein release factor; A d. 4; modified tRNA release factor; P e. 3; modified tRNA release factor; A f. 4; modified tRNA release factor; A

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 11QP: Briefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNA

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Similar questions

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.
A particular tRNA is mutated so that the amino acid attachment cannot bind with the aminoacyl-tRNA synthase. What happens when an mRNA transcript contains the codon for this tRNA? A. The tRNA will not bind to this codon. B. Translation stops and the protein is released. C The wrong tRNA is added to the protein chain. D. Translation stops and the protein remains bound to the ribosome.
Which of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translation
What site on the ribosome is the place where a tRNA molecule leaves the ribosome after attaching its amino acid to the growing chain of amino acids? a. E site b. P site c. A site d. the small ribosomal subunit Please respond as soon as possible
The initiation factors a. help assembling both ribosomal subunits with mRNA and initiator tRNA b. help with the peptide bond formation c. help starting the translation elongation d. are responsible for the initiation of ribosome translocation
After being irradiated, the gene coding for the E site is mutated, causing the E site to have a greater attraction for tRNA. Which process will be most directly affected by this mutation? * DNA replication, Transcription, or Translation Justify your answer to the question above, by describing the effects of the mutation on the process you chose. *
If a eukaryotic mRNA has failed to have a cap attached to its 5' end, what would the negative consequence(s) be? I chose b and got this questions wrong, why is this wrong? a. The mRNA would not properly exit the nucleus. b. The mRNA would not properly bind to a ribosome. c. The mRNA would not receive a poly A tail. d. The mRNA would not use the correct start codon. e. Both a and b are correct.
A segment of DNA has the followimg sequence of bases.. 5'-ATGCAATGATATTGAAGCTTA-3' a) What sequence of bases would appear in mRNA transcribed from this segment? b) Assume the first base in this mRNA is the beginning of a codon. What order of amino acid would be translated into a polypeptide synthesized along this segment? c) Give anticodons for each tRNA associated with the translation in part (b)
Translation of mRNA is terminated at the stop codon by: A. binding of the Release Factor to stop codon B. tRNA binding to the E site C. tRNA that recruits a release factor D. tRNA that recognizes a stop codon
What process is the P site in a ribosome most closely associated with? a. Binds the tRNA molecule carrying the next needed amino acid to the mRNA strand b. Transcription of DNA to RNA c. Release of a tRNA molecule from a ribosome d. Anchoring of the tRNA holding the growing polypeptide
What would be the direct consequence to a cell of loss-of-function of Elongation Factor-Tu (EF-Tu)? You may select multiple answers. a. tRNAs would fail to exit the E site after giving up their amino acid. b. The error rate of translation would increase. c. The ribosome would frequently fail to identify the correct start codon and initiation of translation would become less efficient. d. There would be no pause between the entry of a tRNA into the A site and peptidyl transfer.
Which translation factor mediates the aminoacyl-tRNA entry into the A site of the ribosome? A. EF-Tu B. EF-Ts C. EF-G D. IF1