Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 12, Problem 8TY
During the initiation of translation, the first codon, __________blank, enters the __________blank and associates with the initiator tRNA.
- a. UAG, A site
- b. AUG, A site
- c. UAG, P site
- d. AUG, P site
- e. AUG, E site
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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
During translation, the codon in mRNA is actually “read” by
a. the A site in the ribosome.
b. the P site in the ribosome.
c. the anticodon in a tRNA.
d. the anticodon in an amino acid.
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.
Chapter 12 Solutions
Biology
Ch. 12.1 - What disease would result if a person inherited...Ch. 12.1 - Prob. 2CCCh. 12.1 - What is the direction of flow of genetic...Ch. 12.2 - Core Skill: Connections Look back at the role of...Ch. 12.3 - Prob. 1CCCh. 12.4 - Prob. 1CCCh. 12.4 - Prob. 1EQCh. 12.4 - Prob. 2EQCh. 12.4 - Prob. 3EQCh. 12.5 - Core Skill: Connections Look back at Figure 6.3,...
Ch. 12.5 - Prob. 2CSCh. 12.6 - Prob. 1CCCh. 12 - Which of the following best represents the central...Ch. 12 - A mutation prevents a gene from being transcribed...Ch. 12 - Prob. 3TYCh. 12 - Prob. 4TYCh. 12 - If a eukaryotic mRNA failed to have a cap attached...Ch. 12 - Prob. 6TYCh. 12 - Prob. 7TYCh. 12 - During the initiation of translation, the first...Ch. 12 - Prob. 9TYCh. 12 - Prob. 10TYCh. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 1COQCh. 12 - Prob. 2COQ
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- Portions of eukaryotic mRNA sequence that are removed during RNA processing are . a. exons b. caps c. poly-A tails d. intronsarrow_forward_______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forward
- Energy that drives translation is provided mainly by ______ . a. ATP c. GTP b. amino acids d. ribosomesarrow_forwardDuring 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 abovearrow_forward1. 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.arrow_forward
- 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.arrow_forwardWhat is the genetic code? a. The relationship between a three-base codon sequence and an amino acid or the end of translation b. The entire base sequence of an mRNA molecule c. The entire sequence from the promoter to the terminator of a gene d. The binding of tRNA to mRNAarrow_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_forward
- 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. .arrow_forwardDuring initiation of translation, a is positioned first at the start codon. A. fMet-tRNA B. Val-tRNA C. Cys-tRNA D. Ser-tRNAarrow_forwardThe role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to: A. An amino acid B. A peptide bond C. An R group D. A start codonarrow_forward
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